1. Pattern recognition and reading by machine;Bledsoe,1959
2. Improved memory matrices for the N-tuple pattern recognition method;Bledsoe;I.R.E. Transactions,1962
3. Stochastic model for the Browning bledsoe pattern recognition scheme;Steck;I.R.E. Transactions,1962
4. Two viewpoints of K-tuple pattern recognition;Roy;IEEE Transactions,1967