New Evaluation of T−T2000 from 0.02 K to 1 K by Independent Thermodynamic Methods, J. Engert, A. Kirste, A. Shibahara, A. Casey, L. V. Levitin, J. Saunders, O. Hahtela, A. Kemppinen, E. Mykkänen, M. Prunnila, D. Gunnarsson, L. Roschier, M. Meschke & J. Pekola, International Journal of Thermophysics volume 37, Article number: 125 (2016) (
https://link.springer.com/article/10.1007/s10765-016-2123-4)