Microscopic theory of heat capacity of liquid helium-4 for temperatures   above the critical point
  In this paper, with the corresponding formula for internal energy obtained in Ref. [J. Phys. Stud. {\bf 11}, 259 (2007)], combined with a simple calculation of the effective mass of interacting Bose particles, the behavior of the heat capacity of liquid $^4$He is analyzed numerically for the entire temperature range. The results agree quite well with experimental data. 
I. O. Vakarchuk, V. S. Pastukhov, R. O. Prytula
cond-mat.quant-gas