TY - JOUR AU - Dang Khanh Hoi TI - On the structure of the set of periods for periodic solutions of some linear integro-differential equations on the multidimensional sphere JO - Algebra i analiz PY - 2006 SP - 83 EP - 94 VL - 18 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AA_2006_18_4_a3/ LA - ru ID - AA_2006_18_4_a3 ER -