Sergeev A.V. (1992) Creation of preventive-treatment substances based on carotenoids. Voprosy Meditsinskoi Khimii, 38(6), 4-5.

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et al., "Creation of preventive-treatment substances based on carotenoids." Voprosy Meditsinskoi Khimii 38.6 (1992): 4-5.

Sergeev, A. V. (1992). Creation of preventive-treatment substances based on carotenoids. Voprosy Meditsinskoi Khimii, 38(6), 4-5.