Global existence and stability to the polytropic gas dynamics with an outer force. - Yan-bo Hu; Yun-guang Lu; Naoki Tsuge (Appl. Math. Lett., 2019)

Necessary and sufficient condition for equilibrium of the Hotelling model. - Satoshi Hayashi; Naoki Tsuge (CoRR, 2019)

Global Existence of a Solution for Isentropic Gas Flow in the Laval Nozzle with a Friction Term. - Naoki Tsuge (SIAM J. Math. Anal., 2022)