Experimental infectious respiratory disease in groups of calves: Lobar distribution, variance, and sample-size requirements for vaccine evaluation.

Jericho, K.W.F. and Kozub, J.G. (2004). "Experimental infectious respiratory disease in groups of calves: Lobar distribution, variance, and sample-size requirements for vaccine evaluation.", Canadian Journal of Veterinary Research, 68(2), pp. 118-127.