1- Robert Chung and Fred Hsu, A Study of Ink Trapping and Ink Trapping Ratio, Test Targets, Rochester Institute of technology, 2008.
2- Evan Andersen, Effect of Ink Sequence on Offset & Digital Printing, Test Targets, Rochester Institute of technology, 2008.
3- X-Rite. 2010, A Guide to Understanding
Graphic Arts Densitometry, X-Rite. 2010
4- Robert Chung, Fred Hsu, Daniel Clark, and Khalid Husain, Weight-based Ink Trapping Assessment, TAGA, 2009.
5- Viggiano, J.A. S. and Prakhya, S. H, Prediction of Overprint Spectra Using Trapping Models: A Feasibility Study, TAGA 2008 (a student technical journal), pp. 113-133.
6- ISO 12647-1 (2004). Graphic technology — Process control for the production of half-tone colour separations, proof and production
prints —Part 1: Parameters and measurement methods.
7- ISO 2846-1: 2006, Graphic technology — Colour and transparency of ink sets for fourcolour-printing —Part 1: Sheet-fed and heatset web offset lithographic printing.
8- ISO 12647-2: 2004, Graphic technology — Process control for the production of half-tone colour separations, proof and production prints —Part 2: Offset lithographic processes.
ISO 5-3:2009 Photography and graphic technology -- Density measurements -- Part 3: Spectral conditions.