About this article
Published Online: Jun 28, 2019
Page range: 77 - 90
Received: Nov 03, 2018
Accepted: Jul 03, 2019
DOI: https://doi.org/10.1515/ctra-2019-0005
Keywords
© 2019 Beata Kunat et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Kunat, Beata
University of BialystokPoland
Uszyńska-Jarmoc, Janina
University of BialystokPoland
Żak-Skalimowska, Monika
University of BialystokPoland