[1]
Ban, Đoàn V., Tuấn, T.C. and Thắng, Đoàn V. 2012. Approximate answers to null queries with incomplete fuzzy information in object oriented database. Journal of Computer Science and Cybernetics. 27, 4 (May 2012), 329–340. DOI:https://doi.org/10.15625/1813-9663/27/4/597.