1. An overview of algorithms employed in automated fingerprint processing;Riganati,1977
2. Adaptive digital enhancement of latent fingerprints;Chiralo,1978
3. Automatic reading and matching for single-fingerprint identification;Hoshino,1980
4. A consistency operation for line and curve enhancement;Hedlund,1982
5. Fingerprint classification by directional distribution patterns;Nakamura;Syst. Comput. Controls,1982