“Thermal conductivity of the self-frequency-doubling laser crystal Nd,Lu:YAlx(BO3)4 measured using optical method”, M.Shimosegawa, T.Omatsu, M.Tateda, I.Ogura, J.L.Blows, W.Pu, J.M.Dawes, Appl.Opt. 40 9 (2001) 1372-1377.