Some New Methods for Constructing Block Designs Having Orthogonal Factorial Structure
本文提出几种构造具有正交因子结构的区组设计的新方法，适用于多种参数规格，且能生成比现有方法更小的设计。
SUMMARY Block designs having orthogonal factorial structure are considered and some useful methods of constructing such designs are described. These methods can be used to construct designs for a wide range of parameter specifications. They also produce designs which are smaller than those obtainable through some of the existing methods.