AUTHORS
Z. Pawlak, Tribochemistry Consulting, Salt Lake City, UT, A. Gadomskic, University of Technology and Life Sciences, Bydgoszcz, Poland, M. Hagner-Derengowska, University of Bydgoszcz, Bydgoszcz, Poland, W. Urbaniak, Kazimierz Wielki University, Bydgoszcz, Poland, P. Beldowski, University of Technology and Life Sciences, Bydgoszcz, Poland