Entanglement Degree Characterization of Spontaneous Parametric-Down Conversion Biphotons in Frequency Domain. - Giorgio Brida; Valentina Caricato; Marco Genovese; Marco Gramegna; Mikhail V. Fedorov; Sergey P. Kulik (QuantumComm, 2009)

On practical implementations of qudit-based quantum key distribution protocols. - Stanislav Straupe; Sergey P. Kulik (Quantum Cryptography and Computing, 2010)