(3ebOeI aj Yde GdELQGe hYde GdYbGH (B/ s - (3RjO, eMeO EHQGgje s ((3GdbGgQI (B:s (3OGQ GdKbGaI, s, 1980)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B. s
Keywords: (3Yde GdELQGe s; (3GdLQjeI hGdeLQehf s; (3GdYbhHGJs -- (3adSaIs