TY - JOUR AU - D. K. Podol'ko TI - A family of classes of functions closed with respect to a strengthened superposition operation JO - Vestnik Moskovskogo universiteta. Matematika, mehanika PY - 2015 SP - 27 EP - 31 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VMUMM_2015_2_a4/ LA - ru ID - VMUMM_2015_2_a4 ER -