AUTHOR=Oliveira Manuela , Garção Eugénio , Alexandre Armando , Paulino Joana , Mexia João TITLE=Optimal estimators in biadditive models and their families JOURNAL=Frontiers in Applied Mathematics and Statistics VOLUME=Volume 11 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/applied-mathematics-and-statistics/articles/10.3389/fams.2025.1379210 DOI=10.3389/fams.2025.1379210 ISSN=2297-4687