@article{RM_1993_48_5_a2,
     author = {N. N. Tarkhanov},
     title = {Approximation on compact sets by solutions of systems with surjective symbol},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {103--145},
     publisher = {mathdoc},
     volume = {48},
     number = {5},
     year = {1993},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1993_48_5_a2/}
}