On LP-based approximation for copositive formulation of stable set problem. - Katsuya Tono (JSIAM Lett., 2015)

Optimal Pricing for Submodular Valuations with Bounded Curvature. - Takanori Maehara; Yasushi Kawase; Hanna Sumita; Katsuya Tono; Ken-ichi Kawarabayashi (AAAI, 2017)

DC formulations and algorithms for sparse optimization problems. - Jun-ya Gotoh; Akiko Takeda; Katsuya Tono (Math. Program., 2018)