Feki Krichene ِِAfef, Khoufi W. The determinants of issuers’ long term credit ratings : American S&P500 index. IJAES [Internet]. 2015 May 18 [cited 2024 Nov. 22];3(1):78-85. Available from: https://sciencepubco.com/index.php/IJAES/article/view/4631