1. JM MacDonald, and RW Kirk (1983 ) InCurrent Veterinary Therapy VIII. Small Animal Practice , Saunders, Philadelphia, p489 .
2. A modification of the Lowry procedure to simplify protein determination in membrane and lipoprotein samples
3. GH Muller, RW Kirk, and DW Scott (1989 ) Small Animal Dermatology , 4th edn. Saunders, Philadelphia, p483 .