Journal of China University of Mining and Technology
Journal of China University of Mining and Technology > 2007 > 17 > 1 > 126-132
Journal of China University of Mining and Technology > 2007 > 17 > 3 > 301-305
Journal of China University of Mining and Technology > 2007 > 17 > 1 > 126-132
Journal of China University of Mining and Technology > 2007 > 17 > 3 > 301-305