PYKA, Anna; BŁACH, Joanna. Business-to-business platforms as a part of e-commerce – possibilities of practical use by Polish enterprises. Copernican Journal of Finance & Accounting, [S. l.], v. 3, n. 2, p. 137–149, 2014. DOI: 10.12775/CJFA.2014.023. Disponível em: https://apcz.umk.pl/CJFA/article/view/CJFA.2014.023. Acesso em: 25 jan. 2025.