@article{MZM_1977_21_4_a9,
     author = {S. A. Lomov},
     title = {Unique solvability of certain matrix partial differential equations},
     journal = {Matemati\v{c}eskie zametki},
     pages = {525--530},
     publisher = {mathdoc},
     volume = {21},
     number = {4},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1977_21_4_a9/}
}