SeongHan Shin Kazukuni Kobara Hideki Imai A Secure Construction for Threshold Anonymous Password-Authenticated Key Exchange. 3312-3324 2008 91-A IEICE Transactions 11 http://dx.doi.org/10.1093/ietfec/e91-a.11.3312 db/journals/ieicet/ieicet91a.html#ShinKI08b