Lima, M. S.; Peleteiro, M. C.; Malta, M.; Pais, A. B.; Hjerpe, C. A. Urinary Tract Disease, Weight Loss and Death Possibly Related to Winter Browsing of a Shrubby Plant (Cistus Salviifolius) in Three Herds of Portuguese Beef Cattle. Bov. pract. 2003, 37, 162-178.