TY - JOUR AU - I. Yu. Kulakov AU - D. A. Vologin AU - V. V. Pickalov TI - A multigrid algorithm for the fan-beam ROI-tomography of contrast objects JO - Numerical methods and programming PY - 2013 SP - 543 EP - 548 VL - 14 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VMP_2013_14_4_a12/ LA - ru ID - VMP_2013_14_4_a12 ER -