On contact CR-submanifolds of Sasakian manifolds. Matsumoto, Koji — 1983 International Journal of Mathematics and Mathematical Sciences
On locally conformal Kähler space forms. Matsumoto, Koji — 1985 International Journal of Mathematics and Mathematical Sciences
Doubly warped product C R -submanifolds in a locally conformal Kähler space form. Matsumoto, Koji; Bonanzinga, Vittoria — 2008 Acta Mathematica Academiae Paedagogicae Nyí regyháziensis. New Series [electronic only]
Submanifolds of an even-dimensional manifold structured by a T -parallel connection. Matsumoto, Koji; Mihai, Adela; Naitza, Dorotea — 2003 Lobachevskii Journal of Mathematics
Twisted Product C R -submanifolds in a Locally Conformal Kaehler Manifold Koji Matsumoto; Zerrin Şentürk — 2013 Publications de l'Institut Mathématique