"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.
"Shoichi Fujimori,Yu Kawakami,Masatoshi Kokubu,Wayne Rossman,Masaaki Umehara,Kotaro Yamada","Exceptional constant mean curvature one  catenoids in de Sitter 3-space",,,,,,,2019,Jan.
"Shoichi Fujimori,Yu Kawakami,Masatoshi Kokubu,Wayne Rossman,Masaaki Umehara,Kotaro Yamada","Zero mean curvatrue entire graphs of mixed type in Lorentz-Minkowski 3-space",,"The Quarterly Journal of Mathematics",,"Volume 67","No. 4","pp. 801-837",2016,Dec.
"Shoichi Fujimori,Yu Kawakami,Masatoshi Kokubu,Wayne Rossman,M. Umehara,Kotaro Yamada","CMC-1 trinoids in H3 and metrics of constant curvature one with conical singularities on S^2",,"Prooc. Japan Academy Ser. A",,"Vol. 87",,"pp. 144--149",2011,June