S. A. Efremov, O. V. Shtyrina, S. B. Medvedev, I. A. Yarutkina, A. S. Skidin, M. P. Fedoruk, “Estimation of the signal gain in a linear-cavity ytterbium laser”, Kvantovaya Elektronika, 47:12 (2017), 1105–1108 [Quantum Electron., 47:12 (2017), 1105–1108]
