History and Development of the Bhikkhuni Sangha
Buddhist Attitudes Toward Womens Bodies by Diana Y. Paul PhDsource: http://enlight.lib.ntu.edu.tw/FULLTEXT/JR-BJ010/bj01028892.pdf
Women in Buddhism: Questions and Answers by Ven. Chatsumarn Kabilsingh PhD source: http://www.buddhanet.net/e-learning/history/wbqcontents.htm