@article {2361,
	title = {Amphibien aus Kamerun gesammelt von M. K{\"o}hler und Dr. H. Graf.},
	journal = {Senckenbergiana Biologica},
	volume = {22},
	year = {1940},
	pages = {103-135},
	author = {Mertens, R.}
}
@article {2360,
	title = {Herpetologische Ergebnisse einer Reise nach Kamerun.},
	journal = {Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft, Frankfurt am Main},
	volume = {442},
	year = {1938},
	pages = {1-52},
	author = {Mertens, R.}
}
@article {2358,
	title = {{\"U}ber eine Froschsammlung aus Westafrika.},
	journal = {Zoologischer Anzeiger},
	volume = {123},
	year = {1938},
	pages = {241-245},
	author = {Mertens, R.}
}
@article {2339,
	title = {Amphibien und Reptilien aus Ostafrika.},
	journal = {Jahreshefte des Vereins f{\"u}r Vaterl{\"a}ndische Naturkunde in W{\"u}rttemberg},
	volume = {110},
	year = {1955},
	pages = {47-61},
	author = {Mertens, R.}
}
@article {306,
	title = {Etude d{\textquoteright}une collection herpetologique faite au Cameroon de 1952 a 1955},
	journal = {Bullentin de l{\textquoteright}I.F.A.N.},
	volume = {XIX, Ser. A},
	number = {2},
	year = {1957},
	pages = {548-601},
	author = {Perret, J.-L. and Mertens, R.}
}
