1. Further observations on chronic ovine laryngitis;BRITTON;Cornell Veterinarian,1945
2. Surgical treatment of laryngeal roaring in calves;DE MOOR;Veterinary Record,1968
3. Laryngotomy as a treatment for chronic laryngeal obstruction in cattle: a review of 130 cases;GASTHUYS;Veterinary Record,1992
4. Relationship between ventilation mechanics of the larynx and laryngeal disorders in double-muscled Belgian Blue calves;GUSTIN;Proceedings of the 14th World Congress on Diseases of Cattle, Dublin, Ireland,1986