Mylovanov, Y. B., and V. L. Dorokhov. “Bessel’s Method in Study of Solar Eclipse Influence on the Ionosphere”. Visnyk of V.N. Karazin Kharkiv National University, Series “Radio Physics and Electronics”, no. 39, Dec. 2023, pp. 36-59, doi:10.26565/2311-0872-2023-39-04.