@article{MZ_1935__39_168566,
     author = {W.J. Trjitzinksy},
     title = {A theory of quasi-analytic classes},
     journal = {Mathematische Zeitschrift},
     pages = {560--589},
     publisher = {mathdoc},
     volume = {39},
     year = {1935},
     url = {http://geodesic.mathdoc.fr/item/MZ_1935__39_168566/}
}