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1. Wcisło A.: Development on the National System for Safe Operation of Machines and Principles of System Management. AGH-KTL Journal, vol 18 Kraków 2000 (in Polish).
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2. Collective work. The main author: Hansel J.: Ropeway Transport Safety in the Light of the Current Legal System and Standards. AGH-KTL Journal, vol 33 (pp 185), Kraków 2004 (in Polish).
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3. Hansel J.: Ropeway Transport in the Polish and EU Legislation. Journal of Silesian Polytechnics. Series: Transport. Vol 58. Gliwice 2005 (in Polish).