The Δ:::2:::-conjecture for L(2, 1)-labelings is true for total graphs

Ziming Duan, Pingli Lv, Lianying Miao, Zhengke Miao, Cuiqi Wang. The Δ:::2:::-conjecture for L(2, 1)-labelings is true for total graphs. Appl. Math. Lett., 24(9):1491-1494, 2011. [doi]

Abstract

Abstract is missing.