A 116/13-Approximation Algorithm for L(2, 1)-Labeling of Unit Disk Graphs. - Hirotaka Ono 001; Hisato Yamanaka (SOFSEM, 2019)

An 8-approximation algorithm for L(2,1)-labeling of unit disk graphs. - Hirotaka Ono 001; Hisato Yamanaka (Discret. Appl. Math., 2023)