SERPENT/SUBCHANFLOW COUPLED BURNUP CALCULATIONS FOR VVER FUEL ASSEMBLIESDiego Ferraro, Manuel García, Uwe Imke, Ville Valtavirta, Riku Tuominen, Jaakko Leppänen and Víctor Sanchez-EspinozaEPJ Web Conf., 247 (2021) 04005DOI: https://doi.org/10.1051/epjconf/202124704005