@article{MMO_1980_41_a4,
     author = {G. L. Fel'dman},
     title = {Global dimension of rings of differential operators},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {121--143},
     publisher = {mathdoc},
     volume = {41},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_1980_41_a4/}
}