TY - JOUR AU - M. M. Grinenko TI - Birational automorphisms of a three-dimensional double quadric with an elementary singularity JO - Sbornik. Mathematics PY - 1998 SP - 97 EP - 114 VL - 189 IS - 1 UR - http://geodesic.mathdoc.fr/item/SM_1998_189_1_a4/ LA - en ID - SM_1998_189_1_a4 ER -