Lân, V.N., Hưng, V.C. and Phu, Đặng T. 2012. The technique of hedge algebras for rule-based system identification. Journal of Computer Science and Cybernetics. 22, 4 (Jul. 2012), 301–306. DOI:https://doi.org/10.15625/1813-9663/22/4/1409.