(3bhGYO GdHMK GdGLJeGYi (B/ s - (3YHO GdHGbi (B: (3RjOGfs ([(3GdbGgQI(B] : s (3jWdH ef GdecJHGJ GdcHQi (B: s, 1980)
(3jTJed Ydi GQLGYGJ HHdjhLQGajIs
Keywords: (3GdGLJeGY (B: (3Ydes -- (3WQb GdHMKs