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Vijayakumar, A. ed, A. Vijayakumar, and K.V Nilakanta Sarma. Proceedings of the National Seminar on Discrete Mathematics and Its Applications: August(7-9),2008. Kalamassery: Department of Mathematics, St. Pauls College, 2008.

Vijayakumar, A. ed, et al. Proceedings of the National Seminar on Discrete Mathematics and Its Applications: August(7-9),2008. Department of Mathematics, St. Pauls College, 2008.