KOKI KYO. A Method for Mining Information about Business Cycles from Stock Prices Data. European Economic Letters (EEL), [S. l.], v. 12, n. 2, p. 84–93, 2023. DOI: 10.52783/eel.v12i2.101. Disponível em: https://eelet.org.uk/index.php/journal/article/view/101. Acesso em: 4 oct. 2025.