Team, Support. “Preferences (Partial Pre-Orders) on Complex Numbers - in View of Possible Use in Quantum Econometrics: Songsak Sriboonchitta, Vladik Kreinovich, Olga Kosheleva”. Thai Journal of Mathematics (January 18, 2019): 33–39. Accessed May 5, 2024. https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/856.