Valdenassi, Luigi, Marianno Franzini, Pierpaolo Garbelli, and Manuele Camolese. 2016. “Oxygen-Ozone Activity in Making Factory Farms Antibiotic-Free for Prevention of Antibiotic Resistance”. Ozone Therapy 1 (2):42-44. https://doi.org/10.4081/ozone.2016.6274.