Flores, J., and S. Montecinos. “Spectral and Thermodynamical Properties of Systems With Noncanonical Commutation Rules: Semiclassical Approach”. Revista Mexicana De Física, vol. 50, no. 3, Jan. 2004, pp. 221-0, https://rmf.smf.mx/ojs/index.php/rmf/article/view/3247.