@article{AIF_2019__69_6_2635_0, author = {Zaitsev, Dmitri}, title = {A geometric approach to {Catlin{\textquoteright}s} boundary systems}, journal = {Annales de l'Institut Fourier}, pages = {2635--2679}, publisher = {Association des Annales de l{\textquoteright}institut Fourier}, volume = {69}, number = {6}, year = {2019}, doi = {10.5802/aif.3304}, language = {en}, url = {http://archive.numdam.org/articles/10.5802/aif.3304/} }