TY - JOUR AU - Treiman, Jay S. TI - Generalized Gradients, Lipschitz behavior and Directional Derivatives JO - Canadian journal of mathematics PY - 1985 SP - 1074 EP - 1084 VL - 37 IS - 6 UR - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1985-058-1/ DO - 10.4153/CJM-1985-058-1 ID - 10_4153_CJM_1985_058_1 ER -