"Shoichi Fujimori,Yu Kawakami,Masatoshi Kokubu,Masaaki Umehara,Wayne Rossman,Kotaro Yamada,Seong-Deog Yang","Analytic extensions of constant mean curvature one geometric catenoids in de Sitter 3-space",,"Differential geometry and its applications",,"Volume 84",,,2022,Oct.
"Atsufumi Honda,Naokawa Kosuke,Kentaro Saji,Masaaki Umehara,Kotaro Yamada","A generalization of zakalyukin's lemma, and symmetries of surface singularities",,"Journal of Singularities",,"Vol. 25",,,2022,Oct.