RedchukI. K. (2006) “Separating functions, spectral theory of graphs, and locally scalar representations in Hilbert spaces”, Ukrains’kyi Matematychnyi Zhurnal, 58(1), pp. 36–46. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3433 (Accessed: 22November2024).