1. T. Poggio, H. Voorhes and A. Yuille : ‘A regularized solution to edge detection’ ; Massachusetts Institute of Technology, Artificial Intelligence Laboratory. A.I. Memo 833 (1985)
2. D. Marr. Vision. A computational investigation into the human representation and processing of visual information:’ W.H. Freeman and Co, San Francisco 1982.
3. Y. Meyer : ‘Principe d’incertitutde, bases hilbertiennes et algèbres d’opérateurs’ : Séminaire Bourbaki, 1985–86, n° 662.
4. A. Grossmann and J. Morlet : ‘Decomposition of Hardy functions into square integrable functions of constant shape’ : SIAM J. Math. Anal. 15, 4(1984).