@article{MZM_1989_45_3_a7,
     author = {M. V. Kondrat'eva},
     title = {A minimal dimension polynomial of the extension of a field that is given by a system of linear differential equations},
     journal = {Matemati\v{c}eskie zametki},
     pages = {80--86},
     publisher = {mathdoc},
     volume = {45},
     number = {3},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1989_45_3_a7/}
}