Therif A, Benssassi I. Innovation in the promotional mix elements and its impact on ‎the rapid spread of new products An analytical study of the opinions of a sample of beneficiaries display ‎smartphone "Lenovo. DJEI [Internet]. 2020Apr.21 [cited 2024Nov.23];6(2):165-92. Available from: http://journals.lagh-univ.dz/index.php/djei/article/view/392