"Kentaro Saji,Masaaki Umehara,Kotaro Yamada","Deformations of cuspidal edges in a 3-dimensional space form",,"Kodai Math. J.",,"Vol. 44",,,2024,Mar.
"Atsufumi Honda,Naokawa Kosuke,Kentaro Saji,Masaaki Umehara,Kotaro Yamada","Symmetries of cross caps",,"TOHOKU MATH. J.",,"Vol. 75",,,2023,Mar.
"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.