(3hdGA GdeSJgdc (B: s (3cjajI JMbjbg hGdMGaX Ydjg (B/ s - (3Ydj, YdGA YHGS, s ((3GdGScfOQjI (B[(3eUQ(B] : s (3GdOGQ GdLGeYjI, s, 2009)
(3jJVef GQLGYGJ HHdjhLQGajI (B: (3UaMI (B265-268.s
Keywords: (3NOeGJ GdYedGAs -- (3GOGQIs; (3GdJShjbs -- (3GOGQI(B.s