Lulić, Zoran, Ivan Mavrin, and Ivan Mahalec. “Aspects of Using Biological Regenerative Fuels in Internal Combustion Engines”. Promet - Traffic&Transportation 10, no. 1-2 (1): 75-80. Accessed June 20, 2024. https://traffic.fpz.hr/index.php/PROMTT/article/view/924.