Some remarks on the moduli space of principally polarized abelian varieties with level ( 2 , 4 ) -structure Ryuji Sasaki — 1993 Compositio Mathematica
Some Remarks on the Equations Defining Abelian Varieties. Ryuji Sasaki — 1981 Mathematische Zeitschrift
Modular forms vanishing at the reducible points of the Siegel upper-half space. Ryuji Sasaki — 1983 Journal für die reine und angewandte Mathematik
An arithmetic of modular function fields of degree two Ryuji Sasaki — 1999 Acta Mathematica et Informatica Universitatis Ostraviensis
Determination of Fermat varieties with trivial Hasse-Witt map (an application of the Farey series) Ryuji Sasaki; Keisuke Toki — 1991 Acta Arithmetica