@article{IM2_2006_70_1_a6,
     author = {A. G. Khovanskii and S. P. Chulkov},
     title = {The {Hilbert} polynomial for systems of linear partial differential equations with analytic coefficients},
     journal = {Izvestiya. Mathematics },
     pages = {153--169},
     publisher = {mathdoc},
     volume = {70},
     number = {1},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2006_70_1_a6/}
}