TY - JOUR AU - L. I. Karandjulov AU - Y. P. Stoyanova TI - Boundary Value Problem for Nonlinear Singularity perturbed Systems in Critical case of Exchange of Stability JO - Μαθηματική Επιθεώρηση PY - 1997 SP - 91 EP - 116 VL - 47 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MR_1997__47_a4/ LA - gr ID - MR_1997__47_a4 ER -