Nessonov, N.I. and Boyko, M. (2003) “Entropy of Bogoliubov automorphisms on II$_1$-representations of the group $U(\infty)$”, Methods of Functional Analysis and Topology, 9(4), pp. 317–332. Available at: https://zen.imath.kiev.ua/index.php/mfat/article/view/225 (Accessed: 17 December 2025).