@article{GDZPPN002308290,
title = {The Variation of Isotropy Subalgebras for Analytic Transformation Goups.},
journal = {Mathematische Annalen},
volume = {201},
year = {1973},
pages = {83-92},
zbl = {0266.57011},
url = {http://dml.mathdoc.fr/item/GDZPPN002308290}
}
Richardson, R.W. jr. The Variation of Isotropy Subalgebras for Analytic Transformation Goups.. Mathematische Annalen, Tome 201 (1973) pp. 83-92. http://gdmltest.u-ga.fr/item/GDZPPN002308290/