Khalak, V. I., Hutyi, B. V., & Bordun, O. M. (2022). ZOOTECHNICAL EVALUATION AND ECONOMIC EFFICIENCY OF USING SOWS OF DIFFERENT INTRABREED DIFFERENTIATION ACCORDING TO SOME MATHEMATICAL MODELS AND SELECTIONAL INDICES. Bulletin of Sumy National Agrarian University. The Series: Livestock, (1), 72-78. https://doi.org/10.32845/bsnau.lvst.2022.1.11