TY - JOUR AU - V. Ya. Yakubov TI - Nonclassical two-sided sharp estimates for normalized eigenfunctions of the Sturm--Liouville problem JO - Vestnik Moskovskogo universiteta. Matematika, mehanika PY - 1993 SP - 37 EP - 44 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VMUMM_1993_4_a9/ LA - ru ID - VMUMM_1993_4_a9 ER -