Comparison of two common estimators of the ratio of the means of independent normal variables in agricultural research. Qiao, C.G.; Wood, G.R.; Lai, C.D.; Luo, D.W. — 2006 Journal of Applied Mathematics and Decision Sciences
The structure of the automorphism group of a Croisot-Tessier semigroup. G.R. Wood; K.C. O'Meara — 1991 Semigroup forum