Broszkiewicz, Marek
Zalewska, Aldona
Niedzicki, Leszek
Funding for this research was provided by:
Warsaw University of Technology
Article History
Received: 20 November 2018
Revised: 29 January 2019
Accepted: 3 February 2019
First Online: 19 February 2019
Compliance with ethical standards
:
: The authors declare that they have no competing interests.