Piotr (University of Warsaw Balcerowicz Poland),Agnieszka (University of Social Sciences and Humanities Kuszewska Poland)
（3）
Piotr Twardzisz (University of Warsaw)
（2）
Kulas, Piotr (University of Warsaw, Poland),Waskiewicz, Andrzej (University of Warsaw, Poland),Krawczyk, Stanislaw (Adam Mickiewicz University, Poland)
（1）
；Kulas, Piotr (University of Warsaw, Poland),Waskiewicz, Andrzej (University of Warsaw, Poland),Krawczyk, Stanislaw (Adam Mickiewicz University, Poland)
（1）
