Fitting lactation data with two mathematical models and extension factors for milk, fat and protein of Belgian dairy goats A. Zoa-Mboé, C. Michaux, JC Detilleux, FP Farnir, C. Kebers and PL LeroyAnn. Zootech., 45 5 (1996) 455-465DOI: https://doi.org/10.1051/animres:19960507