"Shoichi Fujimoro,Wayne Rossman,Masaaki Umehara,Kotaro Yamada,Seong-Deog Yang","New maximal surfaces in Minkowski 3-space with arbitrary genus and their cousins in de Sitter 3-space",,"Results Math.",,"Vol. 56","No. 4","Page 41-82",2009,Dec.
"Masatoshi Kokubu,Wayne Rossman,Masaaki Umehara,Kotaro Yamada","Asymptotic behavior of flat surfaces in hyperbolic 3-space",,"J. Math. Soc. Japan",,"Vol. 61","No. 3","Page 799-852",2009,Sept.
"Kentaro Saji,Masaaki Umehara,Kotaro Yamada","Ak singularities of wave fronts",,"Math. Proc. Cambridge Philos. Soc.",,"Vol. 146","No. 3","Page 731-746",2009,Sept.
"Shoichi Fujimori,Wayne Rossman,Masaaki Umehara,Kotaro Yamada,Seong-Deog Yang","Spacelike mean curvature one surfaces in de Sitter 3-space",,"Comm. Anal. Geom.",,"Vol. 17","No. 3","Page 383-427",2009,Sept.
"Francisco Martin,Masaaki Umehara,Kotaro Yamada","Complete bounded holomorphic curves immersed in C^2 with arbitrary genus",,"Proc. Amer. Math. Soc.",,"Vol. 137","No. 10","Page 3437-3450",2009,June
"Kentaro Saji,Masaaki Umehara,Kotaro Yamada","The geometry of fronts",,"Ann. of Math.",,"Vol. 169","No. 2","Page 491-529",2009,Apr.
"Francisco Martin,Masaaki Umehara,Kotaro Yamada","Complete bounded null curves immersed in C^3 and SL(2,C)",,"Calc. Var. Partial Differential Equations",,"Vol. 36","No. 1",,2009,Feb.