D. M. Miles, D. E. Rowe, and J. P. Brooks, “Implications of Intensive Spatial Sampling of Broiler Litter: Characteristics and Gaseous Emissions”, Int. J. Poult. Sci., vol. 16, no. 3, pp. 60–68, Feb. 2017, doi: 10.3923/ijps.2017.60.68.