(3GdSjGSI GdaQfSjI aj GdTQb GdGhSW (B/ s ((3be (B[(3GjQGf(B] : s (3GdeQcR GdGSdGej ddGHMGK GdSjGSjI, (B407 (3g`(B. = 1986.s, 1986)
(3jJVef GQLGYGJ HHdjhLQGajI (B: (3UaMI (B435-439.s
Keywords: (3aQfSGs -- (3YdGbGJ NGQLjIs -- (3GdTQb GdGhSW(B.s; (3GdTQb GdGhSWs -- (3YdGbGJ NGQLjIs -- (3aQfSG(B.s