Kageyama, Sanpei - In: Statistics & Probability Letters 3 (1985) 1, pp. 25-27
A simple method of construction of a semi-regular (SR) group divisible design from another SR group divisible design is given. Using this method, 111 available SR designs from Clatworthy (1973) and John and Turner (1977) are systematically classified into 20 classes. This procedure may produce...