J. Kawanaka, K. Yamakawa, H. Nishioka, and K. Ueda, "Diode-pumped Q-switched Yb:LiYF4 laser at low temperature for chirped pulse regenerative amplification,"
in Advanced Solid-State Lasers, M. Fermann and L. Marshall, eds.,
Vol. 68 of Trends in Optics and Photonics Series
(Optical Society of America, 2002), paper WB7.