[1]
E. Serrano Martínez, F. Giráldez García, P. Lavín González, A. Bernués Jal, A. Bernués Jal, and A. Ruiz Mantecón, “The identification of homogeneous groups of cattle farms in the mountains of León, Spain”, Span. j. agric. res., vol. 2, no. 4, pp. 512-523, Dec. 2004.