VEERAYANNON, K. A Strategy For Innovation Development Of Service Business For Older Persons. International Business & Economics Research Journal (IBER), [S. l.], v. 6, n. 7, 2007. DOI: 10.19030/iber.v6i7.3390. Disponível em: https://clutejournals.com/index.php/IBER/article/view/3390. Acesso em: 17 jul. 2024.