Anh, N. T., and T. T. Sơn. “PARTITION FUZZY DOMAIN WITH MULTI-GNANULARITY REPRESENTATION OF DATA BASING ON HEDGE ALGEBRA APPROACH”. Journal of Computer Science and Cybernetics, vol. 34, no. 1, Aug. 2018, p. 63-76, doi:10.15625/1813-9663/34/1/10797.