Pinto, M. S., Faria, J. E. de, Message, D., Cassini, S. T. A., Pereira, C. S., & Gioso, M. M. (2001). Effect of green propolis extracts on patogenic bacteria isolated from milk of cows with mastitis. Brazilian Journal of Veterinary Research and Animal Science, 38(6), 278-283. https://doi.org/10.1590/S1413-95962001000600006