Anomalous Temperature Dependence of the Sound Velocity of Amorphous Silica below 3 mK

A. Fefferman, S. Dimov, C. Enss, R. O. Pohl, and J.M. Parpia

AIP Conf. Proc. 850 1125-26 (2006). http://dx.doi.org/10.1063/1.2355098

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