(3JGQjN GSQI GdWQGHRhf efP bjGegG ef GdYQGb MJi JQcjG hecI GdecQeI h GdeOjfI GdefhQI (B((3fHPI ef JGQjN GdeOjfI GdefhQI(B) / s - (3GdMSjfi (B: (3GSYO WQGHRhfis ((3GdbGgQI (B: s (3OGQ fTQ GdKbGaI (B: s, 1973)
Keywords: (3GdGfSGH GdYQHjIs -- (3GdeOjfI GdefhQIs; (3GdeOjfI GdefhQIs -- (3JGQjNs