Grigoriev, Dima Max Planck Institute for Mathematics, Max Planck Society;
Ponomarenko, Ilya Max Planck Institute for Mathematics, Max Planck Society;
Grigoriev, D., & Ponomarenko, I. (2002). On non-abelian homomorphic public-key cryptosystems. Scientific Notes of the St.Petersburg Mathematical Institute of the Russian Academy of Sciences, 293, 39-58.