@ARTICLE{publication1, title = "Bidiagonal factorization of tetradiagonal matrices and Darboux transformations", author = "{BRANQUINHO, Am{\´{i}}lcar} and {FOULQUI{\'{E}}-MORENO, Ana} and {MAÑAS, Manuel}", year = "2023-06", journal = "Analysis and Mathematical Physics", volume = "13", number = "3, Article Number 42", pages = "1-19", url = "https://link.springer.com/10.1007/s13324-023-00801-1" }