LIFSHITS, Mikhail; WEBER, Michel. Spectral regularization inequalities. Mathematica Scandinavica, Berkeley, CA, United States, v. 86, n. 1, p. 75–99, 2000. DOI: 10.7146/math.scand.a-14282. Disponível em: https://journals.msp.org/mscand/article/view/923. Acesso em: 24 jul. 2026.