On Siegel modular forms obtained form theta series. Hiroyuki Yoshida — 1984 Journal für die reine und angewandte Mathematik
Siegel's Modular Forms and the Arithmetic of Quadratic Forms. Hiroyuki Yoshida — 1980 Inventiones mathematicae
Stability, instability and complex behavior in macrodynamic models with policy lag. Asada, Toichiro; Yoshida, Hiroyuki — 2001 Discrete Dynamics in Nature and Society