Selection of compositions of ceramic masses based on industrial wastes using mathematical planning methodsKhungianos Yavruyan, Evgeniy Gaishun, Vladimir Kotlyar, Irina Serebryanaya, Anastasiya Filippova and Alexey GaishunE3S Web Conf., 164 (2020) 14017DOI: https://doi.org/10.1051/e3sconf/202016414017