(3JSdjI GdeUGH YfO abO GdCMHGHs - (3Gd(B^(3GefjQ(B. (3eMeO Hf YHO GdSdGes ((3ecJHI GdJQGK GdGSdGejs (3GdbGgQIs, 1977)
Keywords: (3GdCNdGbs; (3GdBOGH GdGSdGejIs