Book 4.2 Faculty of Automotive and Transport EngineeringBook 4.2 · Sustainable and Intelligent Transport Systems, Technologies and Logistics FRI-20.21-1-SITSTL-15 RETROFITTING A GASOLINE VEHICLE WITH A FUEL SYSTEM ENSURING OPERATION WITH GASEOUS FUELS Cite Cite this paper× Citation styleAPA 7IEEEChicago Author–DateHarvardBibTeXRIS DownloadCopy Iliyan Damyanov, Georgi Mladenov