GORDON, P.V.; VAKULENKO, S.A. Merging and interacting wave fronts for reaction - diffusion equations. Archives of Mechanics, Warsaw, Poland, v. 51, n. 5, p. 547–558, 1999. Disponível em: http://am.ippt.gov.pl/index.php/am/article/view/v51p547. Acesso em: 17 jan. 2026.