1. Dokoupil, Z., Van Soest, G., Wansink, D. H.N. and Kapadnis, D.G., Commun. Kamerlingh Onnes Lab., Leiden No. 298a;
2. Specific heats of pure 4He and of a mixture of 4He with 2.50% of 3He between 1°K and 2.3°K
3. Dokoupil, Z., Kapadnis, D. G., Sreeramamurty, K. and Taconis, K. W., Commun. No. 318b;
4. Specific heat of mixtures of 4He and 3He between 1°K and 4°K
5. Taconis, K. W., 3He cryostats: Progress in low Temperature Physics, edited by C. J. Gorter, Vol. III. (North-Holland Publ. Comp. Amsterdam), Chap. V.