Functional dependencies in extended possibility-based fuzzy relational databases. - Zong Min Ma 001; W. J. Zhang; W. Y. Ma; G. Q. Chen (FUZZ-IEEE, 2000)

Conceptual design of fuzzy object-oriented databases using extended entity-relationship model. - Z. M. Ma; Wen-Jun Zhang 005; Weiyin Ma; G. Q. Chen (Int. J. Intell. Syst., 2001)

Structure decomposition analysis for energy-related GHG emission in Beijing: Urban metabolism and hierarchical structure. - X. H. Xia; Y. Hu; Ahmed Alsaedi; Tasawar Hayat; X. D. Wu; G. Q. Chen (Ecol. Informatics, 2015)