E. N. Lobykina, E. I. Lyutina, N. M. Zhilina, and A. A. Lobykina, “VITAMIN D SUPPLY OF POPULATIONIN THE KEMEROVO REGION-KUZBASS”, МК, vol. 25, no. 1, pp. 22–29, Jan. 2026, doi: 10.24412/2687-0053-2026-1-22-29.