@article {1805, title = {Studies on the Probursalia (Freshwater Triclade) of Hokkaido. I. On two new species of the genus Dendrocoelopsis Kenk, D. lacteus and D. ezensis}, journal = {Bulletin of the Kyoto Gakugei University. Series B.}, year = {1958}, pages = {9-18}, author = {Ichikawa, A. and Okugawa, K.I.} } @article {1773, title = {On South American Turbellaria}, journal = {Anais da Academia Brasileira de Ci{\^e}ncias}, volume = {30}, year = {1958}, pages = {391-417}, url = {http://planarias.each.usp.br/system/artigos/4/original/Du_BoisReymond_Marcus_1958_On_South_American_Turbellaria.pdf}, author = {Eveline Du Bois-Reymond Marcus} } @article {825, title = {Planarians of the Caucasus}, journal = {Trudy Obshchestva estestvoispytatelei pri Kazanskom Gosudarstvennom Universitete}, volume = {62}, year = {1958}, pages = {39-89}, author = {Porfirjeva, N.A.} }