Szomolányi, K., M. Lukáčik, and A. Lukáčiková. “Analysis of Asymmetry in Slovak Gasoline and Diesel Retail Market”. ENTRENOVA - ENTerprise REsearch InNOVAtion, vol. 5, no. 1, Oct. 2019, pp. 306-13, https://hrcak.srce.hr/ojs/index.php/entrenova/article/view/13770.