@article{IM2_1989_33_2_a1,
     author = {A. N. Kochubei},
     title = {Parabolic pseudodifferential equations, hypersingular integrals, and {Markov} processes},
     journal = {Izvestiya. Mathematics},
     pages = {233--259},
     year = {1989},
     volume = {33},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1989_33_2_a1/}
}