Shramenko, Natalya, et al. “The Principles of the Choice of Management Decisions Based on Fuzzy Logic for Cargo Delivery of Grain to the Seaport”. International Journal of Engineering & Technology, vol. 7, no. 4.3, Sept. 2018, pp. 211-6, https://doi.org/10.14419/ijet.v7i4.3.19789.