M. Ara Gómez and Y. Agüero Palacios, “Fitting non-linear mixed models for the description of bovine lactation curves under grazing in El Mantaro, Junín, Peru”, Rev. investig. vet. Perú, vol. 31, no. 4, p. e19027, Nov. 2020, doi: 10.15381/rivep.v31i4.19027.