[1]
O. V. Lopotko, “Representations of the additive group of a nuclear space in terms of self-adjoint operators”, Ukr. Mat. Zhurn., vol. 51, no. 2, pp. 271–274, Feb. 1999, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/4609