S. Mayo, F. Royo, M. Tufvesson, H.-E. Carlsson, and J. Hau, “Immunospecific Antibody Concentration in Egg Yolk of Chickens Orally Immunised with Varying Doses of Bovine Serum Albumin and the Mucosal Adjuvant, RhinoVax®, using Different Immunization Regimes”, Scand J Lab Anim Sci, vol. 33, no. 3, pp. 163–169, Dec. 2006.