@article{RSM_2003__61_4_129380,
     author = {Hakobyan, G.H.},
     title = {Estimates of the higher order derivatives of the solutions of hypoelliptic equations.},
     journal = {Rendiconti del seminario matematico},
     pages = {443--459},
     publisher = {mathdoc},
     volume = {61},
     number = {4},
     year = {2003},
     zbl = {1150.35019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RSM_2003__61_4_129380/}
}