@article {1815,
	title = {Ueber neue afrikanische Fr{\"o}sche der Familie Ranidae},
	journal = {Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin},
	volume = {1923},
	year = {1925},
	pages = {96-106},
	author = {Ahl, E.}
}
@article {1103,
	title = {Neue afrikanische Fr{\"o}sche},
	journal = {Zoologischer Anzeiger},
	volume = {61},
	year = {1924},
	pages = {99-103},
	author = {Ahl, E.}
}
@article {1095,
	title = {{\"U}ber einige afrikanische Fr{\"o}sche},
	journal = {Zoologischer Anzeiger},
	volume = {60},
	year = {1924},
	pages = {269-273},
	author = {Ahl, E.}
}
@article {1845,
	title = {Amphibia, Anura III, Polypedatidae},
	journal = {Das Tierreich},
	volume = {55},
	year = {1931},
	pages = {xvi + 477},
	author = {Ahl, E.}
}
@article {2278,
	title = {Zur Kenntnis der afrikanischen Baumfrosch-Gattung Leptopelis.},
	journal = {Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin},
	year = {1929},
	pages = {185-222},
	author = {Ahl, E.}
}
