(3JcedI GdEceGd (B/s - (3GHf fbWI, eMeO Hf YHO GdZfj Hf CHj HcQ,s 579-629 (3g`(B.s; (3YHO QH GdfHj, YHO Gdbjhes ((3ecI GdecQeI (B:s (3LGeYI Ce GdbQi, eQcR EMjGA GdJQGK GdESdGej,s, 1987)
Keywords: (3GdMOjKs -- (3GdeDJda hGdeNJdas; (3GdMOjKs -- (3GdLQM hGdJYOjds