Characterizations of 2-variegated graphs and of 3-variegated graphs

Vasanti N. Bhat-Nayak, Sheshayya A. Choudum, Ranjan N. Naik. Characterizations of 2-variegated graphs and of 3-variegated graphs. Discrete Mathematics, 23(1):17-22, 1978. [doi]

Abstract

Abstract is missing.