Schmool, David S. (1) Dippong, Thomas (1) Kasal, Miroslav (brno University Of Technology (1) Fu, Yongzhu (zhengzhou University, Li, Xiang (zhengzhou University, Tang, Shuai (zhengzhou University, Guo, Wei (zhengzhou University (1) Guldberg, Helene (the Open University (1)