TY - JOUR AU - M. I. Zelikin AU - L. F. Zelikina TI - The structure of optimal synthesis in a~neighbourhood of singular manifolds for problems that are affine in control JO - Sbornik. Mathematics PY - 1998 SP - 1467 EP - 1484 VL - 189 IS - 10 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_1998_189_10_a1/ LA - en ID - SM_1998_189_10_a1 ER -