TY - JOUR AU - Alina Daniela Vîlcu AU - Gabriel Eduard Vîlcu TI - Some characterizations of the quasi-sum production models with proportional marginal rate of substitution JO - Comptes Rendus. Mathématique PY - 2015 SP - 1129 EP - 1133 VL - 353 IS - 12 PB - Elsevier DO - 10.1016/j.crma.2015.09.019 LA - en ID - CRMATH_2015__353_12_1129_0 ER -