PROF. DR .T. VELNAMPY. Value Added, Productivity and Performance of Few Selected Companies in Sri Lanka. Indian Journal of Commerce and Management Studies, [S. l.], v. 2, n. 6, p. 49–55, 2011. Disponível em: https://ijcms.in/index.php/ijcms/article/view/417. Acesso em: 28 mar. 2024.