@article{ZNSL_1981_110_a15,
     author = {S. N. Samborskii},
     title = {Formal properties of boundary value problems for overdetermined systems of partial differential equations},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {203--216},
     publisher = {mathdoc},
     volume = {110},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1981_110_a15/}
}