Shaoquan Sun and Qianqian Li, Intuitionistic Fuzzy Subalgebras (Ideals) with Thresholds (λ, μ) of BCI-Algebras. journal = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology. March 2014, vol. 86(2). 436 - 440 [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/9997846.