A
H. Drulis
Polish Academy of Sciences
A. G. Kuchin
Russian Academy of Sciences
S.A. Nikitin
Moscow State University
D. Kaczorowski
Volodymyr Pavlyuk
Pedagogical University
Hari Bala
Henryk Bala
Częstochowa University of Technology
Henryk Drulis
I. Okonska
Poznań University of Technology
M. Jurczyk
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