RAVICHANDRA RAO, I. K.; RAWAT, K. Computer Programming Language: Depth Classification Version of CC. Journal of Information and Knowledge, [S. l.], v. 9, n. 1, p. 38–62, 1972. DOI: 10.17821/srels/1972/v9i1/54476. Disponível em: https://srels.org/index.php/sjim/article/view/54476. Acesso em: 10 jan. 2025.