Nikitin, Vadim, et al. “Overview of Numerical Methods for Simulating Ranque-Hilsch Effect Within Vortex Tubes”. Mokslas – Lietuvos Ateitis Science – Future of Lithuania, vol. 7, no. 5, Feb. 2016, pp. 571-6, https://doi.org/10.3846/mla.2015.830.