There is an online preview of the book, "Sexual Violence: Against Jewish Women During the Holocaust", offering limited (but enough) viewing of the book edited by Sonja M. Hedgepeth & Rochelle G. Saidel. Some of the topics, including eye-witness accounts, are the following:
"Prostitution, Rape, and Sexual Slavery during World War II"
" The Tragic Fate of Ukrainian Jewish Women under Nazi Occupation, 1941-1944"
"The Rape of Jewish Women during the Holocaust" et al.