Liu, Yi, North China University of Science and Technology Mathematical modeling Association(NCUSTMMA), North China University of Science and Technology, Tangshan, Hebei, 063000, China; School of Mining Engineering, North China University of Science and Technology, Tangshan, Hebei, 063000, China

• Journal of Economic Science Research Vol. 3 , Iss. 2 (April 2020) - Articles
  Regional Economic Vitality Based on Weighted Grey Relational Analysis
  Abstract  PDF