COSTAGLIOLA, G., S. Di MARTINO, F. FERRUCCI, GRAVINO, G. TORTORA, and G. VITIELLO. 2006. “A COSMIC-FFP APPROACH TO PREDICT WEB APPLICATION DEVELOPMENT EFFORT”. Journal of Web Engineering 5 (2):093-120. https://journals.riverpublishers.com/index.php/JWE/article/view/4253.