MARCUS, M.; E. SHISHKOV, A. Propagation of strong singularities in semilinear parabolic equations with degenerate absorption. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, [S. l.], v. 16, n. 3, p. 1019-1047, 2016. DOI: 10.2422/2036-2145.201502_006. Disponível em: https://journals.sns.it/index.php/annaliscienze/article/view/473. Acesso em: 20 feb. 2026.