1. L. Gruson,Théorie de Fredholm p-adigue, Bull. Soc. Math. France,94 (1966), pp. 67–95.
2. J. Martinez-Maurica -Teresa Pellon,Preservation of closed sets under non-archimedean operators, Proc. Kon. Ned. Akad. v. Wet. A,90 (1987), pp. 63–68.
3. A. C. M. van Rooij,Non-archimedean Functional Analysis, Marcel Dekker, New York, 1979.
4. A. C. M. van Rooij,Notes on p-adic Banach Spaces, Report 7725, Katholieke Universiteit, Nijmegen, December 1976.
5. J. P. Serre,Endomorphisms complètement continus des espaces de Banach p-adiques, Inst. Hautes Etudes Sci. Publ. Math.,12 (1962), pp. 69–85.