Nowicka, Monika http://orcid.org/0000-0001-8193-4080
Witkowski, Alfred http://orcid.org/0000-0003-1901-013X
Funding for this research was provided by:
UTP University of Science and Technology in Bydgoszcz
Article History
Received: 8 July 2019
Revised: 4 January 2020
First Online: 14 January 2020