DE JESUS, F.; PASCUAL, S. S.; PASSION, B. J.; FRANCO, C.; MALLARI, M. R. Analyzing the Return-Benefit on the Use of Modern Agricultural Machinery by Rice Farmers in Nueva Ecija, Philippines Using Modern Portfolio Theory (MPT). Research on World Agricultural Economy, [S. l.], v. 6, n. 1, p. 338–352, 2024. DOI: 10.36956/rwae.v6i1.1431. Disponível em: https://journals.nasspublishing.com/index.php/rwae/article/view/1431. Acesso em: 28 jan. 2025.