Xiuqin Ma Yanyan Han Hongwu Qin Peng Wang KNN Data Filling Algorithm for Incomplete Interval-Valued Fuzzy Soft Sets. 30 2023 December 16 Int. J. Comput. Intell. Syst. 1 https://doi.org/10.1007/s44196-023-00190-0 db/journals/ijcisys/ijcisys16.html#MaHQW23