About the Authors

Małgorzata Szczepaniak

Contributed equally to this work with: Małgorzata Szczepaniak, Andrzej Geise

Roles Conceptualization, Formal analysis, Resources

m.szczepaniak@umk.pl

Affiliation Department of Economics, Faculty of Economic Sciences and Management, Nicolaus Copernicus University in Torun, Toruń, Poland

Andrzej Geise

Contributed equally to this work with: Małgorzata Szczepaniak, Andrzej Geise

Roles Methodology

Affiliation Department of Econometrics and Statistics, Faculty of Economic Sciences and Management, Nicolaus Copernicus University in Torun, Toruń, Poland

Competing Interests

The authors have declared that no competing interests exist.