@article {701, title = {On a collection of land-shells from Sarawak, British North Borneo, Palawan, and other neighbouring islands}, journal = {Proceedings of the Zoological Society of London}, volume = {1895}, year = {1895}, pages = {97{\textendash}127}, chapter = {97}, url = {http://www.biodiversitylibrary.org/item/97158$\#$135}, author = {E.A. Smith} } @article {227, title = {On the land-shells of the Natuna Islands}, journal = {The annals and magazine of natural history, including zoology, botany and geology}, volume = {6}, year = {1894}, pages = {453-463}, chapter = {453}, url = {http://www.biodiversitylibrary.org/item/63421$\#$page/508/mode/1up}, author = {E.A. Smith} } @article {673, title = {Die Typen und Typoide des Natur-Museums Senckenberg, 15: Mollusca, Cyclophoridae, Cyclophorinae-Cyclophoreae (2)}, journal = {Archiv f{\"u}r Molluskenkunde}, volume = {84}, year = {1955}, pages = {183-210}, chapter = {183}, author = {A. Zilch} } @article {500, title = {Operculated land molluscs from South-East Asia}, journal = {Nature and life in southeast Asia}, volume = {4}, year = {1965}, pages = {111-128}, chapter = {111}, author = {T. Habe} }