Kamil Gemra
(1), Anna Grygiel-Tomaszewska
(2), Barbara Ocicka
(3), Jolanta Panas
(4), Izabela Rudzka
(5), Jolanta Turek
(6)
(1)
SGH Warsaw School of Economics, Poland,
(2)
SGH Warsaw School of Economics, Poland,
(3)
SGH Warsaw School of Economics, Poland,
(4)
SGH Warsaw School of Economics, Poland,
(5)
SGH Warsaw School of Economics, Poland,
(6)
SGH Warsaw School of Economics, Poland