Effective optimization of billboard ads based on CDR data leverageSemassel, Imed Eddine; Ben Yahia, SadokJournal of Telecommunications and the Digital Economy2022 / p. 76-95 https://doi.org/10.18080/jtde.v10n2.527 Journal metrics at Scopus Article at Scopus Guest EditorialJallouli, Rim; Tobji, Mohamed Anis Bach; Piho, Gunnar; McHeick, HamidJournal of Telecommunications and the Digital Economy2022 / p. 1-5 https://doi.org/10.18080/jtde.v10n2.590 Journal metrics at Scopus Article at Scopus