@article {5432, title = {Studies of the budding process in Convolutriloba retrogemma (Acoela, Platyhelminthes).}, journal = {Hydrobiologia}, volume = {227}, year = {1991}, month = {1991}, pages = {11 - 17}, keywords = {Convolutriloba retrogemma}, author = {Hendelberg,J and {\r A}kesson,B} } @article {5434, title = {On the phylogenetic significance of sagittocysts and copulatory organs in acoel turbellarians.}, journal = {Hydrobiologia}, volume = {227}, year = {1991}, month = {1991}, pages = {307 - 314}, keywords = {Simsagittifera, Symsagittifera}, author = {Mamkaev,YuV and Kostenko,AG} } @article {5224, title = {Convoluta pulchra, n. sp., (Turbellaria: Acoela) from the east coast of North America.}, journal = {Trans Am Microsc Soc}, volume = {110}, year = {1991}, month = {1991}, pages = {12 - 26}, keywords = {Convoluta pulchra, Isodiametra pulchra, LOCATION}, author = {Smith,JPS and Bush,L} }