Berezansky, Y. M. “Integration of a Modified Double-Infinite Toda Lattice by Using the Inverse Spectral Problem”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 60, no. 4, Apr. 2008, pp. 453–469, https://umj.imath.kiev.ua/index.php/umj/article/view/3168.