"Atsufumi Honda,Naokawa Kosuke,Kotaro Yamada,Masaaki Umehara","Isometric deformations of wave fronts at non-degenerate singular points",,"HIROSHIMA MATH. J.",,"Vol. 50","No. 3","Page 269--312",2020,Nov.
"Atsufumi Honda,Naokawa Kosuke,Masaaki Umehara,Kotaro Yamada","Curved foldings with common creases and crease patterns",,"Adv. Appl. Math.",,"Vol. 121",,"Page 25",2020,Oct.
"Atsufumi Honda,Naokawa Kosuke,Masaaki Umehara,Kotaro Yamada","Duality on generalized cuspidal edges preserving singular set images and first fundamental forms",,"J. of Singul.",,"Vol. 22",,"pp. 59--91",2020,Aug.
"Atsufumi Honda,Naokawa Kosuke,Masaaki Umehara,Kotaro Yamada","Cuspidal edges with the same first fundamental forms along a  knot",,"FJ.  Knot Theory Ramifications",,"Vol. 29","No. 7",,2020,June
"Akamine Shintaro,Masaaki Umehara,Kotaro Yamada","Improvement of the Bernstein-type theorem for space-like zero mean curvature graphs in Lorentz-Minkowski space using fluid mechanical duality",,"Proc. Amer. Math. Soc. Ser. B",,"Vol. 7",,"pp. 17-27",2020,Feb.
"S. Akamine,A. Honda,M. Umehara,K.Yamada","Bernstein-type theorem for zero mean curvature hypersurfaces without time-like points in Lorentz-Minkowski space",,"Bulletin of the Brazilian Mathematical Society, New Series",,,,"  https://doi.org/10.1007/s00574-020-00196-8",2020,Jan.
"K. Enomoto,Y. KItagawa,M. Umehara","Extrinsic diameter of immersed flat tori in the 3-sphere II",,"Journal of Geometry",,"Vol. 111","  0047-2468/20/010001-26",,2020,Jan.