“Asymptotic Representations of Regularly Varying $P_{\omega}(Y_0,Y_1,\lambda_0)$-Solutions of the Second-Order Differential Equation, Which Contains the Product of Different Types of Nonlinearities of an Unknown Function and Its Derivative”. Neliniini Kolyvannya, vol. 25, no. 1, Mar. 2022, pp. 133-44, https://twinhead.imath.kiev.ua/index.php/nosc/article/view/1062.