1. Sur les équations différentielles du second order à points critiques fixes;Liouville;Oevres de P. Painlevé,1975
2. On Galois Theory of Fields with Operators
3. A class of transcendental functions containing elementary and elliptic ones;Nishioka;Osaka J. Math,1985
4. Introduction to the Painlevé Equations (in Japanese);Okamoto;Sophia Kokyuroku in Math,1985