[1]
. V. P. Kirlitsa, “ D-optimal designs of experiments for trigonometric regression on interval with heteroscedastic observations”, Журнал Белорусского государственного университета. Математика. Информатика, no. 3, pp. 80–85, Dec. 2020, doi: 10.33581/2520-6508-2020-3-80-85.