2019UNE-EN ISO 4264:2019 Petroleum products - Calculation of cetane index of middle-distillate fuels by the four variable equation (ISO 4264:2018)
2013UNE-EN ISO 4264:2007/A1:2013 Petroleum products - Calculation of cetane index of middle-distillate fuels by the four-variable equation (ISO 4264:2007/Amd 1:2013)
2007UNE-EN ISO 4264:2007 Petroleum products - Calculation of cetane index of middle-distillate fuels by the four-variable equation (ISO 4264:2007)