Proceedings of the 18th International Conference on Low Temperature Physics, Kyoto,
1987. Jpn. J. Appl. Phys. 26 161 doi:10.7567/JJAPS.26S3.161
Proceedings of the 18th International Conference on Low Temperature Physics, Kyoto,
1987. Jpn. J. Appl. Phys. 26 161 doi:10.7567/JJAPS.26S3.161