@article{GDZPPN002182823,
title = {The state of a bounded linear operator on a non-Archimedian normed space.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {229},
year = {1968},
pages = {155-162},
zbl = {0161.34402},
url = {http://dml.mathdoc.fr/item/GDZPPN002182823}
}
Ellis, Robert L. The state of a bounded linear operator on a non-Archimedian normed space.. Journal für die reine und angewandte Mathematik, Tome 229 (1968) pp. 155-162. http://gdmltest.u-ga.fr/item/GDZPPN002182823/