Selected Publications: 

1. Böer A, Tirumalae R, Bresch M, Falk TM. Pseudoclonality in cutaneous pseudolymphomas: a pitfall in interpretation of rearrangement studies. Br J Dermatol. 2008 Aug;159(2):394-402. 

2. Böer A, Bresch M, Dayrit J, Falk TM. Erythema migrans: a reassessment of diagnostic criteria for early cutaneous manifestations of borreliosis with particular emphasis on clonality investigations. Br J Dermatol. 2007. Jun;156(6):1263-71. 

3. Böer A, Falk TM. Circumscribed palmar hypokeratosis induced by papilloma virus type 4. J Am Acad Dermatol 2006; 54(5):908-9.

4. Böer A, Blödorn-Schlicht N, Wiebels D, Steinkraus V, Falk TM. Unusual histopathologic features of cutaneous leishmaniasis identified by polymerase chain reaction specific for leishmania on paraffin-embedded skin biopsies.  Br J Dermatol. 2006; 155(4):815-9.

5. Böer A., Herder N., Winter K., Falk TM. Observations clinical, histopathological, and molecular pathologic in herpes folliculitis. Br J Dermatol. 2006;154 (4):743-6.

6. Böer A, Herder N, Blödorn-Schlicht N, Steinkraus V, Falk TM. Correlation of morphology with molecular pathology: Infection of the skin by herpesviruses. Indian J Dermatol Venereol Leprol. 2006;72(4):270-5.

7. Böer A, Herder N, Blödorn-Schlicht N, Falk TM. Herpes incognito, most commonly, is herpes zoster – and its pattern histopathologic is distinctive! Am J Dermatopathol. 2006; 28(2):181-186.

8. Böer A, Herder N, Blödorn-Schlicht N, Falk TM. New observation:  Herpes incognito, most commonly, is herpes zoster — and its pattern histopathologic is distinctive! Dermatopathology: Practical & Conceptual 2005; 11 (4):4 free full text available at www.derm101.com.

9. Nobah C, Kouamelan EP, N’douba V, Snoeks J, Teugels GG, Goore-Bi G , Kone T , Falk TM (2006) The colour pattern of the caudal fin, a useful criterion for identification of two species of tilapia and their hybrids. Journal of Fish Biology 69, 698-707. 

10. Van der Bank FH, Kotzé A, Falk TM (2005) Phylogenetic relationships between some African Characidae, Distichodontidae and Hepsetidae: results of allozyme and mtDNA data analyses. African Journal of Aquatic Science. 30 (1), 77-84. 

11. Falk TM (2004) The utility of complete cytochrome b sequences for systematic and phylogenetic studies on African tilapiines (Teleostei, Cichlidae). In Biodiversity, Management and Utilisation of West African Fishes (Abban EK, Dugan P, Casal CMV, Falk TM, eds.), pp. 20-27. Malaysia: WorldFish Center, ISBN 983-2346-32-0, 63 p.

12. Falk TM, Teugels GG, Abban EK (2004) Genetic diversity of West African tilapias and its implications for fisheries, aquaculture and biodiversity conservation: case studies on Sarotherodon melanotheron, Sarotherodon nigripinnis and Tilapia guineensis. In Biodiversity, Management and Utilisation of West African Fishes (Abban EK, Dugan P, Casal CMV, Falk TM, eds.), pp. 6-11. Malaysia: WorldFish Center, ISBN 983-2346-32-0, 63 p.

13. Falk TM, Abban EK (2004) Genetic diversity of the Nile tilapia Oreochromis niloticus (Teleostei, Cichlidae) from the Volta system in Ghana. In Biodiversity, Management and Utilisation of West African Fishes (Abban EK, Dugan P, Casal CMV, Falk TM, eds.), pp.13-15. Malaysia: WorldFish Center, ISBN 983-2346-32-0, 63 p.

14. Lüssen A, Falk TM, Villwock W (2004) Systematics and phylogeny of Chilean species of the genus Orestias Valenciennes, 1839 (Teleostei: Cyprinodontidae) and related cyprinodontid taxa. Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut. Band 101, pp. 55-64. ISSN 0072-9612, 55-64.

15. Abban EK, Casal CMV, Dugan P, Falk TM (2004) Biodiversity, Management and Utilisation of West African Fishes. WorldFish Center, ISBN 983-2346-32-0, 63 p.

16. Falk TM, Teugels GG, Abban EK, Villwock W, Renwrantz L (2003) Phylogeographic patterns in populations of the black-chinned tilapia complex (Teleostei, Cichlidae) from coastal areas in West Africa: support for the refuge zone theory. Molecular Phylogenetics and Evolution 27, 81-92.

17. Falk TM, Abban EK, Teugels GG (2003) Revision and biogeographical analysis of the black-chinned tilapia Sarotherodon melanotheron (Teleostei, Cichlidae): results of morphometric, allozyme, globin chain and mtDNA studies. Journal of Natural History 37 (18), 2191-2212. 

18. Lüssen A, Falk TM, Villwock W (2003) Phylogenetic patterns in populations of Chilean species of the genus Orestias (Teleostei, Cyprinodontidae): results of mitochondrial DNA analysis. Molecular Phylogenetics and Evolution 29, 151-160.

19. Witten EP, Falk TM, Lüssen A, Abban EK, Villwock W and Renwrantz L (2003) The use of xenoantigenic antisera for the identification of tilapiine species: Comparative laboratory and field studies. Journal of Applied Ichthyology 19, 352-358. 

20. Smit A, van der Bank H, Falk TM, de Castro A (2001) Biochemical genetic markers to identify two morphologically similar South African Mastomys species (Rodentia: Muridae). Biochemical Systematics and Ecology 29, 21-30.

21. Teugels GG, Falk TM (2000) Major fishes of West African coastal waters and their morphological characterization, with emphasis on Sarotherodon melanotheron (Teleostei, Cichlidae). In Biodiversity and sustainable use of fish in the coastal zone (Abban EK, Casal CMV, Falk TM & Pullin RSV, eds), pp. 5-7. Manila: ICLARM Conference Proceedings 63, 71 p.

22. Falk TM, Teugels GG, Abban EK, Villwock W, Renwrantz L (2000) Morphometric and allozyme variation in the black-chinned tilapia Sarotherodon melanotheron (Perciformes, Cichlidae), with a revision of the subspecies complex. Journal of Natural History 34, 1849-1863. 

23. Abban EK, Casal CMV, Falk TM, Pullin RSV (2000) Biodiversity and Sustainable Use of Fish in the Coastal Zone. ICLARM Conference Proccedings 63, 71 p. Manila, Philippines.

24. Abban EK, Asante KA, Falk TM (2000) Environments of the black-chinned tilapia, Sarotherodon melanotheron, and their potential effects on the genetic structure of stocks in Ghana. In Biodiversity and sustainable use of fish in the coastal zone (Abban EK, Casal CMV, Falk TM & Pullin RSV, eds), pp. 14-16. Manila: ICLARM Conference Proceedings 63, 71 p.

25. Falk TM, Teugels GG, Abban EK (2000) Genetic characterization of West African populations of Sarotherodon melanotheron (Teleostei, Cichlidae). In Biodiversity and sustainable use of fish in the coastal zone (Abban EK, Casal CMV, Falk TM & Pullin RSV, eds), pp. 8-11. Manila: ICLARM Conference Proceedings 63, 71 p. 

26. Falk TM, Abban EK, Villwock W (1999) Population genetic analysis of the haemoglobins of the black-chinned tilapia. Journal of Fish Biology 55, 233-242.

27. Falk TM, Abban EK, Villwock W, Renwrantz L (1998) Species and subspecies characteristic haemoglobins in some tilapiine fishes and a comparative study on their globin chains. Aquaculture International 6, 133-145.

28. Falk TM, Villwock W, Renwrantz L (1998) Heterogeneity and subunit composition of the haemoglobins of 5 tilapiine species (Teleostei, Cichlidae) of the genera Oreochromis and Sarotherodon. Journal of Comparative Physiology B 168, 9-16.

29. Falk TM, Abban EK, Villwock W, Renwrantz L (1998) Hemoglobin variations in some tilapiine species (Teleostei, Cichlidae) of the genera Oreochromis and Sarotherodon. In Genetics and Aquaculture in Africa (Agnèse J-F,  ed.), pp. 147-152. Paris: ORSTOM, 326 p.   

30. Falk TM, Abban EK, Steenbuck M, Villwock W, Renwrantz L (1998) Biochemical genetic characteristics of West African populations of Sarotherodon melanotheron (Teleostei, Cichlidae). In African Fish and Fisheries. Diversity and Utilization. International Conference for the PARADI Association and the Fisheries Society of Africa, Grahamstown, South Africa.

31. Pullin RSV, Casal CMV, Abban EK and Falk TM (1997) The characterization of Ghanaian tilapia genetic resources for use in fisheries and aquaculture. ICLARM Conference Proccedings 52, 58 p. Manila, Philippines.

32. Renwrantz L, Falk TM, Hallas O, Villwock W (1997) On the species-specific composition of molecules from muscle and blood of specimens of the tilapia group. In The characterization of Ghanaian tilapia genetic resources for use in fisheries and aquaculture. (Pullin RSV, Casal CMV, Abban EK, Falk TM, eds), pp. 6-11. Manila: ICLARM Conference Proceedings 52, 58 p.

33. Falk TM, Abban EK, Oberst S, Villwock W, Pullin RSV, Renwrantz L (1996) A biochemical laboratory manual for species characterization of tilapiine fishes. ICLARM Series 17, 93 p. Manila, Philippines.