Samulyak R. V. “Hamiltonian Analysis of Accurate Integration of a Three-Level Quantum Model of the Dicke Super-Radiation ”. Ukrains’kyi Matematychnyi Zhurnal 44, no. 9 (October 7, 1992): 1256-1264. Accessed July 27, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/8178.