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Kozlovsky V., Lozovaja G.S. Analysis of the productive longevity of black-motley cows in connection with the country of origin of their fathers // Collection of scientific works «Selection and genetic and environmental problems of increasing longevity tehnologichekie productive livestock». Vyp.13. Bryansk State Agricultural Academy. 2009. P. 98–99.
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Kozlowski V.Y. Adaptive capacity and Holstein cows of black-motley breeds in the NorthWest of Russia // dis. Dr. biol. Sciences. pos. Forest Glade Moscow region. 2010. 274 p.
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