WYRZYKOWSKI, J. Strategies of the Development of Tourist Product in Lower Silesia and Opole Silesia. Turyzm/Tourism, [S. l.], v. 9, n. 1, p. 209–219, 1999. DOI: 10.18778/0867-5856.9.1.13. Disponível em: https://czasopisma.uni.lodz.pl/tourism/article/view/10305. Acesso em: 14 may. 2024.