Flexible Occlusion Rendering (FOR) has been the subject of a number of publications. The most complete description of FOR can be found in David Borland's Ph.D. thesis, finished in May 2007.

Volumetric Depth Peeling (VDP), a precursor to and subset of FOR, has been described in a full paper presented at the SPIE Visualization and Data Analysis conference in 2006, and a short article published in SPIE's Electronic Imaging newsletter in 2005.

The results of a collaboration with Dr. Julia Fielding from UNC Radiology, using VDP to perform virtual ureteroscopy investigating the interior of the urinary tract for stones and tumors, were published in this article.