Dodge Perfection. - Terry Windell; Abbe Daniel; Irene Kim; Rafael Castelblanco; Tom Wichitsripornkul; Clay Budin; Bob Hoffman; Mark Völpel (SIGGRAPH Electronic Art and Animation Catalog, 1999)

zDOF: a fast, physically accurate algorithm for simulating depth-of-field effects in synthetic images using z-buffers. - Clay Budin (SIGGRAPH Sketches, 2004)