@article {139,
	title = {Comparative osteology and evolutionary relationships in the African Raninae (Anura Ranidae)},
	journal = {Monitore zoologico italiano},
	volume = {14},
	year = {1981},
	pages = {285-331},
	keywords = {ranids, Tompterna},
	author = {Clarke, B. T.}
}
@article {96,
	title = {Chromosome lineages in African ranoid frogs},
	journal = {Monitore zoologico italiano},
	volume = {5},
	year = {1981},
	pages = {55-91},
	keywords = {Petropedetidae, Phrynobatrachus},
	author = {Bogart, J.P. and Tandy, M.}
}
@article {95,
	title = {How many times has terrestrial breeding evolved in anuran amphibians?},
	journal = {Monitore zoologico italiano},
	volume = {3},
	year = {1981},
	pages = {29-40},
	author = {Bogart, J.P.}
}
@article {284,
	title = {Karyology of the main groups of African frogs},
	journal = {Monitore zoologico italiano},
	volume = {4},
	year = {1981},
	pages = {41-53},
	keywords = {Petropedetidae, Phrynobatrachus},
	author = {Morescalchi, A.}
}
@article {114,
	title = {Southern origin of the African genus Strongylopus tschudi, 1838 (Amphibia Ranidae)},
	journal = {Monitore zoologico italiano},
	volume = {15},
	year = {1981},
	pages = {333-336},
	author = {Channing, A.}
}
