V. L. Rodionova, N. N. Tchoob, T. Y. Schegoleva, and P. Todorov, “Dielectric Permittivity of Human Ejaculate at Normo- and Pathospermia after Interaction with Cryoprotective Medium”, Probl Cryobiol Cryomed, no. 3, pp. 46–50, Sep. 2004.