O artykule
Data publikacji: 09 cze 2008
Zakres stron: 151 - 157
DOI: https://doi.org/10.2478/v10037-007-0017-4
This content is open access.
Xiquan Liang
Qingdao University of Science and Technology, China
Tao Sun
Qingdao University of Science and Technology, China
Dahai Hu
Qingdao University of Science and Technology, China