1. V.G. Berkovich, Spectral Theory and Analytic Geometry Over Non-Archimedean Fields. Mathematical Surveys and Monographs, vol. 33 (American Mathematical Society, Providence, RI, 1990)
2. N. Bourbaki, Éléments de mathématique. Algèbre commutative. Chapitres 5 à 7 (Springer, Berlin, Heidelberg, 2006)
3. M. Baker, R. Rumely, Potential Theory and Dynamics on the Berkovich Projective Line. Mathematical Surveys and Monographs, vol. 159 (American Mathematical Society, Providence, RI, 2010)
4. J.W.S. Cassels, Local Fields. London Mathematical Society Student Texts, vol. 3 (Cambridge University Press, Cambridge, 1986)
5. G. Christol, Modules différentiels et équations différentielles p-adiques. Queen’s Papers in Pure and Applied Mathematics, vol. 66 (Queen’s University, Kingston, ON, 1983)