TY - JOUR AU - G. G. Kazaryan TI - Estimates of the $L_p$ norms of derivatives by a nonregular set of differential operators JO - Differencialʹnye uravneniâ PY - 1969 SP - 911 EP - 921 VL - 5 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1969_5_5_a12/ LA - ru ID - DE_1969_5_5_a12 ER -