COVID-19 Impact on B2B E-Commerce: A Multi-Group Analysis of Sports and Surgical SMEs. Pakistan Journal of Commerce and Social Sciences (ISSN 1997-8553), [S. l.], v. 15, n. 1, p. 166–195, 2021. Disponível em: https://jes.ac.pk/index.php/jes/article/view/151. Acesso em: 1 dec. 2025.