@article{Sass1994, author = {J{\"o}rn Oliver Sass}, title = {3,4-Didehydroretinol may be present in human embryos/fetuses}, series = {Reproductive Toxicology}, volume = {8}, number = {2}, publisher = {Elsevier}, issn = {0890-6238}, doi = {10.1016/0890-6238(94)90024-8}, pages = {191}, year = {1994}, language = {en} }