VARGAS PORTILLO, Patricia. Brief notes on the effects of the coronavirus on e-sales of small and medium-sized companies in Spain. UNIE Business Research, [S. l.], v. 10, n. 2, p. 403–406, 2021. DOI: 10.48132/hdbr.365. Disponível em: https://unieresearch.universidadunie.com/ubr/article/view/365. Acesso em: 29 sep. 2026.