WAŁĘGA, Grzegorz. How Business Models Are Changing in the Era of the Internet. Krakow Review of Economics and Management/Zeszyty Naukowe Uniwersytetu Ekonomicznego w Krakowie, Krakow, n. 5(953), p. 33–50, 2016. DOI: 10.15678/ZNUEK.2016.0953.0503. Disponível em: https://krem.uek.krakow.pl/index.php/krem/article/view/1022.. Acesso em: 20 sep. 2024.