Examples:
(Book) D. Marr, Vision, A Computational Investigation into the
Human Representation & Processing of Visual Information,
Freeman: San Francisco, CA, 1982.
(Journal Article) A. Rosenfeld and M. Thurston, "Edge and
curve detection for visual scene analysis," IEEE Trans.
Comput., vol. C.-20, pp. 562-569, 1971.
(Conference Proceedings) A. Witkin, "Scales space filtering," in
Proc. Int. Joint Conf. Artif. Intell., Karlsruhe, West Germany,
1983, pp. 1019-1021.
(Lab. memo.) A.L. Yuille and T. Poggio, "Scaling theorems for
zero crossings," M.I.T. Artif. Intell. Lab., Massachusetts Inst.
Technol., Cambridge, MA, A.I. Memo. 722, 1983.