Marković, Hrvoje, Bojana Dalbelo Bašić, Hrvoje Gold, Fangyan Dong, and Kaoru Hirota. “GPS Data-Based Non-Parametric Regression for Predicting Travel Times in Urban Traffic Networks”. Promet - Traffic&Transportation 22, no. 1 (January 27, 2012): 1-13. Accessed September 19, 2021. https://traffic.fpz.hr/index.php/PROMTT/article/view/159.