@article{MMO_1967_16_a6, author = {B. R. Vaǐnberg and S. G. Gindikin}, title = {A strengthened {Huygens} principle for a~certain class of differential operators with constant coefficients}, journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva}, pages = {151--180}, publisher = {mathdoc}, volume = {16}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MMO_1967_16_a6/} }