CRAVEN, T. C. Three-Dimensional Displays of Concept Relation Structures. Journal of Information and Knowledge, [S. l.], v. 29, n. 1, p. 1–14, 1992. DOI: 10.17821/srels/1992/v29i1/50624. Disponível em: https://srels.org/index.php/sjim/article/view/50624. Acesso em: 18 apr. 2025.