Non-specific resistance of cows when adding a complex preparation of sodium selenite and montmorillonite to the rationNikolay Shpoganyach, Vitaly Shumsky, Valentina Breslavets, Nikolay Zuev and Pavel BreslavetsBIO Web Conf., 36 (2021) 06041DOI: https://doi.org/10.1051/bioconf/20213606041