Walter J. Dobrogosz Dobrogosz, W. J., Peacock, T. J., & Hassan, H. M. (2010). Evolution of the Probiotic Concept: From Conception to Validation and Acceptance in Medical Science. ADVANCES IN APPLIED MICROBIOLOGY, VOL 72, Vol. 72, pp. 1–41. https://doi.org/10.1016/s0065-2164(10)72001-3 Edens, F. W., Parkhurst, C. R., Casas, I. A., & Dobrogosz, W. J. (1997). [Review of Principles of ex ovo competitive exclusion and in ovo administration of Lactobacillus reuteri]. POULTRY SCIENCE, 76(1), 179–196. https://doi.org/10.1093/ps/76.1.179