@article{IM2_2006_70_5_a6, author = {A. V. Romanov}, title = {Effective finite parametrization in~phase spaces of parabolic }, journal = {Izvestiya. Mathematics }, pages = {1015--1029}, publisher = {mathdoc}, volume = {70}, number = {5}, year = {2006}, language = {en}, url = {http://geodesic.mathdoc.fr/item/IM2_2006_70_5_a6/} }