TY - JOUR AU - Ginchev, Ivan TI - l-stable Functions and Constrained Optimization JO - Mathematics and Education in Mathematics PY - 2010 SP - 129 EP - 134 VL - 39 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MEM_2010_39_1_a9/ LA - en ID - MEM_2010_39_1_a9 ER -