1. Interdisciplinary report: Housing Design for Cattle – Danish Recommendations,2001
2. Dairy Reference Manual NRAES-63;Adams,1995
3. Detalles constructivos en las salas de ordeño;Alonso,2002
4. Manual de instalaciones para explotaciones lecheras;Arana,2002
5. A comparison of free-stall use by modernized Wisconsin dairies;Bewley;J. Dairy Sci.,2001