%0 Journal Article %A V. A. Vassiliev %T Local Petrovskii lacunas close to parabolic singular points of the wavefronts of~strictly hyperbolic partial differential equations %J Sbornik. Mathematics %D 2016 %P 1363-1383 %V 207 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2016_207_10_a1/ %G en %F SM_2016_207_10_a1