Lasek, M., Nowak, E., & Pęczkowski, M. (2003). An Analysis of Tourist Attractiveness of the Powiats (Districts) in the Świętokrzyskie Województwo using the PROMETHEE method. Turyzm/Tourism, 13(1), 81–104. https://doi.org/10.18778/0867-5856.13.1.05