@article{AA_1990_2_5_a2,
     author = {Ya. I. Belopol'skaya},
     title = {Parabolic equations in sections of principal bundles},
     journal = {Algebra i analiz},
     pages = {80--100},
     publisher = {mathdoc},
     volume = {2},
     number = {5},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_1990_2_5_a2/}
}