Commercial Ebullated Bed Vacuum Residue Hydrocracking Performance Improvement during Processing Difficult Feeds. - Georgiev, Borislav Enchev; Stratiev, Dicho Stoyanov; Argirov, Georgy Stoilov; Nedelchev, Angel; Dinkov, Rosen; Shishkova, Ivelina Kostova; Ivanov, Mihail; Atanassov, Krassimir; Ribagin, Simeon; Nikolov Palichev, Georgi; Nenov, Svetoslav; Sotirov, Sotir; et al. (Applied Sciences (2076-3417), 2023)