F. A. Bakhritdinova, G. E. Kangilbaeva, F. M. Urmanova, S. S. Mirrakhimova, and I. F. Nabieva, “Tear and serum levels of the neuromarker BDNF in type 2 diabetes mellitus patients with and without diabetic retinopathy”, J.ophthalmol. (Ukraine), no. 6, pp. 16–19, Dec. 2023.