@article{105138,
author = {Old\v rich Kowalski},
title = {The invariant classification of 3-dimensional linear subspaces of infinitesimal isometries of $E\_3$},
journal = {Commentationes Mathematicae Universitatis Carolinae},
volume = {008},
year = {1967},
pages = {635-649},
zbl = {0163.43003},
mrnumber = {0228629},
language = {en},
url = {http://dml.mathdoc.fr/item/105138}
}
Kowalski, Oldřich. The invariant classification of 3-dimensional linear subspaces of infinitesimal isometries of $E_3$. Commentationes Mathematicae Universitatis Carolinae, Tome 008 (1967) pp. 635-649. http://gdmltest.u-ga.fr/item/105138/
Differential geometry and symmetric spaces, 1962, Academic Press, New York and London. | MR 0145455 | Zbl 0122.39901
Vorlesungen über die Integration der partiellen Differentialgleichungen erster Ordnung, (Teubner 1893).