(3Sff GdOGQej (B/s - (3GdOGQej, YHO Gddg Hf YHO GdQMef Hf GdaVd,s 181-255 (3gLQjG(B.s; (3GdHZG, eUWai OjHs ((3OeTb (B:s (3OGQ Gdbde ;s (3HjQhJ (B:s (3GdOGQ GdTGejI,s, 1991)
Keywords: (3GdMOjKs -- (3Sff GdOGQejs; (3GdMOjKs -- (3GdSffs