KAŹMIERCZAK, B. Quasi-homoclinic solutions to a system of ODEs. Archives of Mechanics, Warsaw, Poland, v. 51, n. 1, p. 105–120, 1999. Disponível em: http://am.ippt.gov.pl/index.php/am/article/view/v51p105. Acesso em: 17 jan. 2026.