(3fMh bjGe LgGR GOGQj eJWhQ aj GdYQGb (B/ s - (3eYQha, ghTjGQ, s ((3HZOGO, GdYQGb (B: s (3efThQGJ hRGQI GdGYdGe, (B397 (3g`(B. = 1977.s, 1977)
(3jJVef GQLGYGJ HHdjhLQGajI (B: (3UaMI (B234-238.s
Keywords: (3GdGOGQI GdYGeIs -- (3GdYQGb(B.s; (3GdYQGbs -- (3SjGSI hMcheI(B.s