LIU, Jiajun. Based on COVID-19, the analysis of two company business model. BCP Business & Management, [S. l.], v. 34, p. 528–532, 2022. DOI: 10.54691/bcpbm.v34i.3060. Disponível em: https://bcpublication.org/index.php/BM/article/view/3060. Acesso em: 27 aug. 2026.