TY - JOUR AU - Yu. V. Zasorin TI - On the well-posedness of Cauchy problems for nonstationary equations with the unselected highest time derivative and the definition of the trace of distribution on the hyperplane of the initial data JO - Itogi nauki i tehniki. Sovremennaâ matematika i eë priloženiâ. Tematičeskie obzory PY - 2021 SP - 47 EP - 73 VL - 191 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/INTO_2021_191_a5/ LA - ru ID - INTO_2021_191_a5 ER -