TY - JOUR AU - I. E. Svetov TI - Properties of the ray transforms of two-dimensional $2$-tensor fields given in the unit disk JO - Sibirskij žurnal industrialʹnoj matematiki PY - 2013 SP - 121 EP - 130 VL - 16 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SJIM_2013_16_4_a10/ LA - ru ID - SJIM_2013_16_4_a10 ER -