1. L. Goldfarb, A new approach to pattern recognition, Progress in Pattern Recognition, Vol. 2, L. N. Kanal and A. Rosenfeld, eds (accepted for publication).
2. Syntactic Pattern Recognition and Applications;Fu,1982
3. Structural Pattern Recognition;Pavlidis,1977
4. Pattern recognition and geometric complexity;Toussaint,1980
5. Remarks on two problems connected with pattern recognition;Aiserman,1969