Jun, Young Bae, Madad Khan, Florentin Smarandache, and Seok-Zun Song. (2020) 2020. “Length Neutrosophic Subalgebras of BCK=BCI-Algebras”. Bulletin of the Section of Logic 49 (4):377-400. https://doi.org/10.18778/0138-0680.2020.21.