Author/Authors :
- - نويسنده Department of Mathematics, Kandaswami Kandar's College, P-velur, Tamil Nadu-638 182, India. Chandrasekar Veerappan , - - نويسنده Research Scholar (Part Time), Department of Mathematics, Kandaswami Kandar's College, P-velur, Tamil Nadu-638 182, India. Parimala Somasundaram