(3Shb GdYeGdI GdRQGYjI ai eUQ NdGd aJQI GdSHYjfGJ(B: (3OQGSI JMdjdjI (B/ s - (3NOjLI eMeO GdGYSQs ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1990)
Keywords: (3eUQs; (3GdRQGYIs; (3GdYeGd GdRQGYjhfs