BRODDA, B. On Uniqueness Theorems for Differential Equations With Constant Coefficients. MATHEMATICA SCANDINAVICA, [S. l.], v. 9, p. 55–68, 1961. DOI: 10.7146/math.scand.a-10622. Disponível em: https://www.mscand.dk/article/view/10622. Acesso em: 23 nov. 2024.