WENDEL, J. G. Zero-Free Intervals of Semi-Stable Markov Processes. MATHEMATICA SCANDINAVICA, [S. l.], v. 14, p. 21–34, 1964. DOI: 10.7146/math.scand.a-10702. Disponível em: https://www.mscand.dk/article/view/10702. Acesso em: 24 nov. 2024.