B. M.  Zimkus, Rödel, M. - O., and Hillers, A., ?Complex patterns of speciation and diversity among African frogs (genus Phrynobatrachus)?, Molecular Phylogenetics & Evolution, vol. 55, pp. 883-900, 2010.

B. M.  Zimkus and Schick, S., ?Light at the end of the tunnel: insights into the molecular systematics of East African puddle frogs (Anura: Phrynobatrachidae)?, Systematics and Biodiversity, vol. 8, pp. 39-47, 2010.