@article{MAT_1973_17_6_a4,
     author = {L. V. H\"ormander},
     title = {Uniqueness theorems and wave front sets for solutions of linear differential equations with analytic coefficients},
     journal = {Matematika},
     pages = {82--110},
     publisher = {mathdoc},
     volume = {17},
     number = {6},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAT_1973_17_6_a4/}
}