Approximating Maximum Diameter-Bounded Subgraphs. - Yuichi Asahiro; Eiji Miyano; Kazuaki Samizo (LATIN, 2010)

Optimal Approximation Algorithms for Maximum Distance-Bounded Subgraph Problems. - Yuichi Asahiro; Yuya Doi; Eiji Miyano; Kazuaki Samizo; Hirotaka Shimizu (Algorithmica, 2018)