1. Ł. Warguła, M. Kukla and B. Wieczorek, A device for measuring the rolling resistance force of objects equipped with running gear (original title in Polish: Urządzenie do pomiaru siły oporów toczenia obiektów wyposażonych w układ jezdny) patent application number P.438203 Pat/2312 date of the patent application (18.06.2021).
2. Ł. Warguła, B. Wieczorek, K. J. Walus and M. Kukla, Device for measuring of the rolling re-sistance force of the objects equipped with the trolley system (original title in Polish: Urządzenie do pomiaru siły oporów toczenia obiektów wyposażonych w układ jezdny) patent number PL235796B1 date of patent application (02.02.2018).
3. Ł. Warguła, M. Kukla, V. Yurchenko and A. Kukesheva, “Analysis of the usability of rolling resistance measurement methods to study the mechanisms of some wheelchairs”. IOP Conf. Ser.: Mater. Sci. Eng. 1199 012063 (2021).
4. The determination of the rolling resistance coefficient of objects equipped with the wheels and suspension system – results of preliminary tests
5. Rolling Resistance Measurements on Cycleways Using an Instrumented Bicycle