MARTIO, O. Quasiminimizing properties of solutions to Riccati type equations. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, [S. l.], v. 12, n. 4, p. 823-832, 2013. DOI: 10.2422/2036-2145.201104_001. Disponível em: http://20.103.181.36/index.php/annaliscienze/article/view/312. Acesso em: 27 may. 2025.