Alcántara Bode, J. y Yngvason, J. (1989) Algebraic quantum field theory and noncommutative moment problems I, Pro Mathematica, 3(5-6), pp. 65-81. Disponible en: https://revistas.pucp.edu.pe/index.php/promathematica/article/view/6063 (Accedido: 8mayo2024).