Source: https://www.researchgate.net/profile/Abdennebi-Talbi/publication/341448102_Demarche_globale_de_conception_des_systemes_d'information_urbanises_cas_de_la_methode_PRAXEME/links/5ec1c25a299bf1c09ac4b917/Demarche-globale-de-conception-des-systemes-dinformation-urbanises-cas-de-la-methode-PRAXEME.pdf