@article{MMO_1979_39_a3,
     author = {V. N. Tulovskiǐ},
     title = {Propagation of singularities of operators with characteristics of constant multiplicity},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {113--134},
     publisher = {mathdoc},
     volume = {39},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_1979_39_a3/}
}