TY - JOUR AU - E. R. Rosendorn TI - Rigid fixation of asymptotic quadrangle of negative Gaussian curvature JO - Trudy Seminara im. I.G. Petrovskogo PY - 2013 SP - 405 EP - 413 VL - 29 IS - 29 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TSP_2013_29_29_a11/ LA - ru ID - TSP_2013_29_29_a11 ER -