Identification and analysis of difficulties in the implementation of HACCP in Russian food industry enterprisesElena Chernova, Irina Bazhenova, Larisa Tsupranova, Valeria Bychenkova and Tatiana BazhenovaE3S Web Conf., 161 (2020) 01076DOI: https://doi.org/10.1051/e3sconf/202016101076