Ha, M., ashi., and Honorio Vera Mendoza. “Quantum Phase Space for an Ideal Relativistic Gas in $d$ Spatial Dimensions”.
Revista Mexicana De Física
, vol. 38, no. 1, Jan. 1991, pp. 81-91, https://rmf.smf.mx/ojs/index.php/rmf/article/view/2224.