1. 4 mutually orthogonal Latin squares of orders 28 and 52;Abel;J. Combin. Theory Ser. A,1991
2. Design Theory;Beth,1986
3. More mutually orthogonal Latin squares;Brouwer;Discrete Math.,1982
4. Three mutually orthogonal Latin squares of order 14;Todorov;Ars Combin.,1985
5. Four mutually orthogonal Latin squares of order 20;Todorov;Ars Combin.,1989