Kergel, David (IUBH Dortmund, Germany),Heidkamp-Kergel, Birte (Rhine-Waal University of Applied Sciences, Germany),Paulsen, Michael,Norreklit, Hanne (Aarhus University, Denmark)
（2）
Birte Heidkamp (EDT)/ David Kergel (EDT)
（1）
David Kergel (EDT)/ Birte Heidkamp (EDT)/ Patrik Kj熳sdam Tell徼s (EDT)/ Tadeusz Rachwal (EDT)/ Samuel Nowakowski (EDT)
（1）
Kergel, David (HU Berlin, Germany),Heidkamp-Kergel, Birte (Rhine-Waal University of Applied Sciences, Germany),Arnett, Ronald C.,Mancino, Susan
（1）
Kergel, David,Heidkamp-Kergel, Birte,Arnett, Ronald C.,Mancino, Susan
（1）
