Nowik-Boltyk, P., I. V. Borisenko, V. E. Demidov, and S. O. Demokritov. “Magnon Laser”. Ukrainian Journal of Physics 64, no. 10 (November 1, 2019): 938. Accessed August 17, 2022. https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2019546.