TY - JOUR AU - Ya. M. Dymarskii TI - On topological properties of manifolds of eigenfunctions generated by a~family of periodic Sturm--Liouville problems JO - Contemporary Mathematics. Fundamental Directions PY - 2006 SP - 22 EP - 37 VL - 16 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMFD_2006_16_a2/ LA - ru ID - CMFD_2006_16_a2 ER -