Analytic Theory of Singular Perturbations and Lomov's Regularization Method. - Vasiliy I. Kachalov (FDM, 2018)

Asymptotic and Pseudoholomorphic Solutions of Singularly Perturbed Differential and Integral Equations in the Lomov's Regularization Method. - Abduhafiz Bobodzhanov; Valeriy Safonov; Vasiliy I. Kachalov (Axioms, 2019)

Axiomatic Approach in the Analytic Theory of Singular Perturbations. - Margarita Besova; Vasiliy I. Kachalov (Axioms, 2020)