Wieczorek, S., and I. Źródelna. “A Report on the Specialist Field Study in Tourist Areas in 1996-1999 at the Geography of Tourism and Hotel Management Studies at the University of Lódź”. Turyzm/Tourism, vol. 9, no. 2, Dec. 1999, pp. 127-35, doi:10.18778/0867-5856.9.2.16.