Alcántara Bode, Julio, y J. Yngvason. Algebraic Quantum Field Theory and Noncommutative Moment Problems I. Pro Mathematica 3, no. 5-6 (mayo 21, 1989): 65-81. Accedido julio 2, 2024. https://revistas.pucp.edu.pe/index.php/promathematica/article/view/6063.