Hirotaka Ono, Hisato Yamanaka. A 116/13-Approximation Algorithm for L(2, 1)-Labeling of Unit Disk Graphs. In Barbara Catania, Rastislav Královic, Jerzy R. Nawrocki, Giovanni Pighizzini, editors, SOFSEM 2019: Theory and Practice of Computer Science - 45th International Conference on Current Trends in Theory and Practice of Computer Science, Nový Smokovec, Slovakia, January 27-30, 2019, Proceedings. Volume 11376 of Lecture Notes in Computer Science, pages 379-391, Springer, 2019. [doi]
Abstract is missing.