B. F. MartInez, A. A. Contreras, and E. A. Gonzalez, “Use of Saccharomyces cerevisiae Cell Walls in Diets for Two Genetic Strains of Laying Hens Reared in Floor and Cages”, Int. J. Poult. Sci., vol. 9, no. 2, pp. 105–108, Jan. 2010, doi: 10.3923/ijps.2010.105.108.