1 M.. Mootz, M.. Kira, S.W. Koch, A.E. Almand-Hunter, K.. Wang, and S.T. Cundiff, in (SPIE, San Francisco, California, United States, 2015).
1 M.. Mootz, M.. Kira, S.W. Koch, A.E. Almand-Hunter, and S.T. Cundiff, Physical Review B 89, (2014).