KARWOWSKI, M. THE EFFECTS OF THE EVOLUTION OF THE BUSINESS MODEL IN A PERIOD OF ECONOMIC CRISIS — A STUDY OF ANNUAL REPORTS OF SELECTED AIRLINES. Ekonomia i Prawo. Economics and Law, [S. l.], v. 14, n. 4, p. 479–490, 2015. DOI: 10.12775/EiP.2015.031. Disponível em: https://apcz.umk.pl/EiP/article/view/EiP.2015.031. Acesso em: 7 feb. 2023.