1. Methods of Increasing the Speed and the logical Possibilities of DDA;Kelaive,1962
2. Design of High Speed DDA;Goldman,1965
3. Design of a 1 Mc Iteration rate DDA;Bradley,1962
4. DDA;Rowley;Brit.Comm. and Elec,1958
5. DDA with Arbitrary stored Interconnection;Wood;IEEE Tran. Comp.,1956