BOCHENEK, M. Odkrycia wielokrotne w ekonomii. Acta Universitatis Nicolai Copernici Ekonomia, [S. l.], v. 40, p. 101–112, 2009. DOI: 10.12775/AUNC_ECON.2009.009. Disponível em: https://apcz.umk.pl/AUNC_EKON/article/view/AUNC_ECON.2009.009. Acesso em: 4 lip. 2024.