Korowicki, Antoni. “The Conception of an Integrated Geographical Information System and Its Exploitation in Formulating the Strategy of Tourism in the Gdańsk Region”. Turyzm/Tourism 6, no. 1 (June 30, 1996): 89–100. Accessed May 8, 2024. https://czasopisma.uni.lodz.pl/tourism/article/view/10502.