(3JaSjQ GdbQGf GdYXje (B/ s - (3Hf cKjQ GdbQTi (B: (3YeGO GdOjf GHhGdaOGA GSeGYjd Hf YeQ Hf cKjQ Hf VhA GdHUQi GdOeTbis ((3HjQhJ (B: s (3OGQ GdLjd , s, 1990)
Keywords: (3GdbQGf (B- (3JaSjQs