Classification of Ideal Homomorphic Threshold Schemes over Finite Abelian Groups (Extended Abstract).

Yair Frankel Yvo Desmedt Classification of Ideal Homomorphic Threshold Schemes over Finite Abelian Groups (Extended Abstract). 25-34 http://link.springer.de/link/service/series/0558/bibs/0658/06580025.htm 1992 EUROCRYPT db/conf/eurocrypt/eurocrypt92.html#FrankelD92