%0 Journal Article %A V. G. Tkachev %T Spectral properties of nonassociative algebras and breaking regularity for nonlinear elliptic type PDEs %J Algebra i analiz %D 2019 %P 51-74 %V 31 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/AA_2019_31_2_a1/ %G en %F AA_2019_31_2_a1