Bronza, S.D., Kotvytskiy, A.T. and Korostelov, Y.M. 2019. The N-point gravitational lens as cover and his the profile cover. Journal of V. N. Karazin Kharkiv National University. Series Physics. 31 (Dec. 2019), 48-53. DOI:https://doi.org/10.26565/2222-5617-2019-31-7.