WIEGANDT, Claus-C. et al. Determinants of online shopping – an empirical study in six North Rhine-Westphalian city regions. Raumforschung und Raumordnung | Spatial Research and Planning, DE, v. 76, n. 3, p. 247–265, 2018. DOI: 10.1007/s13147-018-0532-5. Disponível em: https://rur.oekom.de/index.php/rur/article/view/390.. Acesso em: 2 may. 2024.