TY - JOUR AU - V. G. Tkachev TI - Spectral properties of nonassociative algebras and breaking regularity for nonlinear elliptic type PDEs JO - Algebra i analiz PY - 2019 SP - 51 EP - 74 VL - 31 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AA_2019_31_2_a1/ LA - en ID - AA_2019_31_2_a1 ER -