Ramanujam Kamaraj, Ben Kane, Ryoko Oishi-Tomiyasu. Universal sums of generalized heptagonal numbers. JOURNAL OF NUMBER THEORY. 2023. 249. 500-536
Ryoko Oishi-Tomiyasu, Tomohito Tanaka, Junichi Nakagawa. Distribution rules of systematic absences and generalized de Wolff figures of merit applied to electron backscatter diffraction ab initio indexing. Journal of Applied Crystallography. 2021. 54. 624-635
Ryoko Oishi-Tomiyasu. Mathematical Tools that Connect Different Indexing Analyses. Proceedings. 2020
Ryoko Oishi-Tomiyasu. Positive-definite ternary quadratic forms with the same representations over Z. International Journal of Number Theory. 2020. 16. 7. 1493-1534
K Tomiyasu, R Oishi-Tomiyasu, M Matsuda, K Matsuhira. A new mathematical approach to finding global solutions of the magnetic structure determination problem. Scientific reports. 2018. 8. 1. 16228-16228
富安(大石) 亮子. On determination of the structure of a periodic point set from its average theta series (保型形式とその周辺). 数理解析研究所講究録. 2017. 2055. 81-95
Ryoko Oishi-Tomiyasu. Application of convex optimization to identification of atomic species from diffraction patterns. Powder Diffraction. 2017. 32. S1. S179-S185