Flaška, V.; Ježek, J.; Kepka, T.; Kortelainen, J. (2007). Transitive Closures of Binary Relations I. Prague: School of Mathematics – Physics Charles University. p. 1. Archivado desde el original el 2 de noviembre de 2013. Lemma 1.1 (iv). This source refers to asymmetric relations as "strictly antisymmetric".
Mäs, Stephan (2007), «Reasoning on Spatial Semantic Integrity Constraints», Spatial Information Theory: 8th International Conference, COSIT 2007, Melbourne, Australia, September 19–23, 2007, Proceedings, Lecture Notes in Computer Science 4736, Springer, pp. 285-302, doi:10.1007/978-3-540-74788-8_18.
Flaška, V.; Ježek, J.; Kepka, T.; Kortelainen, J. (2007). Transitive Closures of Binary Relations I. Prague: School of Mathematics – Physics Charles University. p. 1. Archivado desde el original el 2 de noviembre de 2013. Lemma 1.1 (iv). This source refers to asymmetric relations as "strictly antisymmetric".