Gomonai, A. I. “Autoionizing Resonances in Three-Photon Ionization Spectrum of the Ytterbium Atom”. Ukrainian Journal of Physics 60, no. 3 (January 21, 2019): 225. Accessed May 22, 2026. https://ujp.bitp.kiev.ua/index.php/upg/article/view/2019258.