1. Lectures on some aspects of p-adic Analysis;Bruhat,1963
2. Divergent Series;Hardy,1949
3. Sur Ie théorème de Banach-Steinhaus;Monna;Indagationes Mathematicae,1963
4. Matrix transformations in non-archimedian fields;Rangachari;Indagationes Mathematicae,1964
5. Introduction to the Theory of Divergent Series;Szász,1948