@article {coppois_factor_1982,
	title = {Factor analysis of Intraspecific biometrical variations of \textit{Bulimulus (\textit{Naesiotus) \textittanneri (Pulmonata, Bulimulidae) in the Galapagos Islands},
	journal = {Malacologia},
	volume = {22},
	number = {1-2},
	year = {1982},
	pages = {495{\textendash}497},
	author = {Coppois, Guy and Glowacki, Claude}
}
@article {coppois_etude_1982,
	title = {{\'E}tude syst{\'e}matique et {\'e}cologique des Bulimulidae (Gast{\'e}ropodes, Pulmon{\'e}s) de l{\textquoteright}Archipel des Galapagos, Contribution N{\textdegree} 2: Analyse factorielle des variations biom{\'e}triques intrasp{\'e}cifiques chez \textit{Bulimulus (Naesiotus) tanneri (Dall, 1895)},
	journal = {Annales de la Soci{\'e}t{\'e} royale zoologique de Belgique},
	volume = {122},
	number = {2},
	year = {1982},
	pages = {175{\textendash}195},
	author = {Coppois, Guy and Glowacki, Claude}
}
