@article{10_4064_cm_58_2_221_231,
     author = {Ewa Duma},
     title = {Algebraic {SL(2)-actions:} deformations of infinite isotropy subgroups},
     journal = {Colloquium Mathematicum},
     pages = {221--231},
     publisher = {mathdoc},
     volume = {58},
     number = {2},
     year = {1989},
     doi = {10.4064/cm-58-2-221-231},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-58-2-221-231/}
}