TY - JOUR AU - S. L. Wali TI - An integral estimate for an operator preserving inequalities between polynomials JO - Problemy analiza PY - 2020 SP - 137 EP - 147 VL - 9 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PA_2020_9_3_a9/ LA - en ID - PA_2020_9_3_a9 ER -