Generation of Inequivalent Generalized Bell Bases. - Antoni Wójcik; Andrzej Grudka; Ravindra W. Chhajlany (Quantum Inf. Process., 2003)

Superadditivity of multiple access gaussian channels. - Lukasz Czekaj; Jarek K. Korbicz; Ravindra W. Chhajlany; Pawel Horodecki (Quantum Cryptography and Computing, 2010)