By Guodong Xie   Zhupeng Zhang   in International Review of Education / Internationale Zeitschrift für Erziehungswissenschaft / Revue internationale de l'éducation

ISSN:0020-8566|49|6|621-629

Springer Publishing Company ‎(2003)‎

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By Chen Luzheng   Wen Shuming   Xu Guodong   Xie Haiyun   in Mineral Processing and Extractive Metallurgy Review

ISSN:0882-7508|34|3|139-150

Taylor & Francis Ltd‎(2013)‎

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