(3eaghe GdYed GdbVGFj aj VhA Gdabg hCMcGe GdbVGA (B:s (3OQGSGJ aj bGfhf GdeQGaYGJ (B: (3GdYed GdbVGFj h GdJTQjYj, GdYed GdbVGFj h GdYed GdEOGQj, GdeYGjjQ GdabgjI ddYed GdbVGFj (B... /s - (3NGdO, gTGe eMeO CMeO(B.s ((3GdEScfOQjI, eUQ (B:s (3eDSSI THGH GdLGeYI,s, 1990)
(3jTJed Ydi edGMb(B.s
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdbVGA aj GdESdGes; (3GdEKHGJ (B((3bGfhf(B)s -- (3eUQs; (3bGfhf GdeQGaYGJs -- (3eUQs; (3GdbVGAs -- (3eUQs