O. V. Angel'skii, A. G. Ushenko, A. D. Arkhelyuk, S. B. Ermolenko, D. N. Burkovets, “Structure of matrices for the transformation of laser radiation by biofractals”, Kvantovaya Elektronika, 29:3 (1999), 235–238 [Quantum Electron., 29:12 (1999), 1074–1077]
