A SUBGROUP METHOD BASED ON THE EQUIVALENT DANCOFF-FACTOR CELL TECHNIQUE COMPARED WITH THE FINE-STRUCTURE METHOD IN APOLLO3®Li Mao, Igor Zmijarevic, Richard Sanchez and Nicolas Gerard CastaingEPJ Web Conf., 247 (2021) 02017DOI: https://doi.org/10.1051/epjconf/202124702017