T. Nikolova, Krastena, and Doychin T. Boyadzhiev. 2015. “CLASSIFICATION OF DIFFERENT TYPES BEE HONEY ACCORDING TO PHYSICO-CHEMICAL CHARACTERISTICS”. Ann. Sofia Univ. Fac. Math. And Inf. 102 (December):281-87. https://ftl5.uni-sofia.bg/index.php/fmi/article/view/75.