[1]     American National Standard Institute ANSI. Fingerprint

         Identification Data Format for Information Interchange.

         New York,1986.   

[2]     J.N. Bradley and C..M.  Brislaw. “The Wavelet/Scalar

         Quantization Standard    for Digital Fingerrprint Image

         Compression”. In Proc. Of the ISCAS, volume 3  pagina 205-208, 1994.

[3]     G.T. Candela. PCASYS – “A Pattern-Level Classification

         Automation System  for Fingerprints”. Technical Report        

         NISTI5647, August 1995.

[4]     L. Coetzee and E. C. Botha. “Fingerprint Recognition In Low         

         Quality   Images”. Pattern Recognition,

         26 (10):1441-1460, 1993.

[5]     C.E. Chapel. Fingerprinting –

         A Manual of Identification.” Coward McCann,    New York, 1941.

[6]     Francis Galton. “Finger Prints.Macmillan, London, 1892.

[7]     A. Grasselli. “On the Automatic Classification of Fingerprints-       

         Some Consideretion on the Linguistic Interpretetion of

         Pictures.” In Methodologies  of  Pattern Recognition,    

         Academic. S. Watanabe Ed., New York, 1969.

[8]     R.C. Gonzales and R.E. Woods. “Digital Image Processing.

         Reading.”     Addison Wesley, 1992.

[9]     L. Hong and A.K. Jain. “On-Line Fingerprint Verification”.

         In Proc. of  the      ICPR, pagine 596-600, 1996.

[10]   A.K. Hrechack and J.T. McHugh. “Automated Fingerprint

         Recognition Using Structural Matching.” Pattern

         Recognition, 23(8):893-904, 1990.

[11]   T. Kanade,  Computer Recognition of Human Faces”,

         Basel and Stuttgart, Birkauser,    1997

[12]   D.Reifeld, Y. Yeshurun,  Robust Detection of Facial Features

         by Generalized   Symmetry”,  Proceedings  of  11th  

         International Conference on Pattern Recognition,  1992

[13]   T. Sakai, M. Nagao, S. Fujibayashi,  Line Extraction and

         Pattern Recognition in a photograph”,  Pattern Recognition,

         1,  1969

[14]   S. Yamamoto, H. Yokohuchi, e T. Suzuki,

"Image Processing and Automatic Diagnosis of Color Fundus Photographs",

Proceedings 2nd International Joint Conference on Pattern Recognition,

Copenhagen, pp. 268-269, Agosto 13-15, 1974.

[15]   H. Yokouchi, S. Yamamoto, T. Suzuki, M. Matsui, e K.Kato,

"Fundus pattern recognition", Japanese Journal of Medical Electronics

and Biological Engineering, Vol. 12, N. 3, pp. 123-130, Giugno 1974.

[16]   F.H. Adler, "Physiology of the Eye", St. Louis, MO; Mosby, 1965

[17]   A.L. Kroeber, "Anthropology", New York, Harcourt Brace Jovanovich, 1948

[18]   M.S. Obaidat e B. Sadoun, "Verification of Computer users

using Keystroke Dynamics," IEEE Trans. on System,

Man and Cybernetics, Vol. 27, N. 2, pp. 261-269, Aprile 1997.

[19]   M.S. Obaidat, "A Methodology for Improving Computer Access Security,"

Computer & Security,Vol. 12, pp. 657-662, 1993.

[20]   M.S. Obaidat e D.T. Macchairolo, "An On-line Neural Network System

for Computer Access Security," IEEE Trans. Industrial Electronics,

Vol. 40, N. 2, pp. 235-241, Aprile 1993.

[21]   S. Bleha e M.S. Obaidat, "Dimensionality Reduction and Feature Extraction

Applications in Identifying Computer Users," IEEE Trans. System, Man

and Cybernetics, Vol. 21, N. 2, Marzo/Aprile 1991.

[22]   D. Umphress e G. Williams, "Identity Verification Through keyboard

Characteristics," International Journal Man-Machine Studies, Vol. 23, pp.263-273,

Academic Press, 1985.

[23]   W.L. Bryan e N. Halter, "Studies in the Physiology and Psychology

of the Telegraphic Language," The Psychology of Skill: Three Studies,

(E.H. Gardener and J.K. Gardener, editors), pp. 35-44, NY Time Co., NY 1973.

[24]   S. Card, T. Moran, e A. Newell, "The Keystroke Level Model

for User Performance Time with Interactive Systems,"

Communications of ACM,Vol. 23, pp. 396-410, 1980.

[25]   R. Mammone, X. Zhang, e R. Ramachandran, "Robust Speaker

Recognition-A Feature-based Approach", IEEE Signal Processing Magazine,

Vol. 13, N. 5, pp. 58-71, 1996.

[26]   D. Reynolds and R. Rose, "Robust Text-Independent Speaker

Identification Using Gaussian Mixture Speaker Models”, IEEE Transaction

on Speech and Audio Processing, Vol. 3, N 1, pp 72-83, 1995

[27]   "A Performance Evaluation of Biometric Identification Devices, Technical Report",

          SAND91-0276, Sandia National Laboratories, Albuquerque, NM and Livermore,

         CA for the United States Department of Energy under Contract DE-AC04-76DP00789, 1991