DENYSENKO, N. ABOUT THE PROPERTIES OF PERIODIC SOLUTIONS FOR SYSTEMS OF FUNCTIONAL-DIFFERENTIAL EQUATIONS WITH A SMALL PARAMETER. Sworld-Us Conference proceedings, [S. l.], v. 1, n. usc11-01, p. 24–28, 2022. DOI: 10.30888/2709-2267.2022-11-01-021. Disponível em: https://proconference.org/index.php/usc/article/view/usc11-01-021. Acesso em: 3 may. 2024.