Ester C. LARI; Marina RAVERA; Maria-Laura TORRENTE. On Multidimensional Risk Models with Lower and Upper Barriers. Current Aspects in Business, Economics and Finance Vol. 7, [S. l.], p. 41–52, 2023. DOI: 10.9734/bpi/cabef/v7/3843B. Disponível em: https://stm.bookpi.org/CABEF-V7/article/view/9242. Acesso em: 3 jun. 2026.