(3GdGfaLGQ (B:s (3CSQGQ JOejQ ebQ GdeGQfR aj HjQhJ (B/s - (3dhfZ, GdGejQGd QhHQJ s ([(3Ohf ecGf(B] :s (3OGQ GdQHjY ,s, 1985)
Keywords: (3JOejQ s; (3CSQGQs; (3GdeGQfR s; (3ebQ s