STANCA, Romeo; SOBOLU, Rodica. MEASURING PHYSICAL AND VIRTUAL PRESENCE IN THE DIGITAL ECONOMY ERA. Studia Universitatis Babeș-Bolyai Digitalia, [S. l.], v. 63, n. 1, p. 69–80, 2018. DOI: 10.24193/subbdigitalia.2018.1.05. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbdigitalia/article/view/9633. Acesso em: 7 jan. 2026.