Optimal multiple assignments based on integer programming in secret sharing schemes. - Mitsugu Iwamoto; Hirosuke Yamamoto; Hirohisa Ogawa (ISIT, 2004)

Optimal Multiple Assignments Based on Integer Programming in Secret Sharing Schemes with General Access Structures. - Mitsugu Iwamoto; Hirosuke Yamamoto; Hirohisa Ogawa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2007)