Ocean Navigator Online, "Print-on-demand plan treats charts as data",  Tim Queeney, Marine Technology Notes, Ocean Navigator #135,  January/February 2004.

Maritime Exchange for the Delaware River and Bay, Philadelphia, PA, THE BEACON, "Print on Demand Nautical Chart Program Expands", November/December 2002, page 5.

Bluewater Books & Charts, Fort Lauderdale, FL, 
Fall 2002 Newsletter, 
"Fully Corrected Nautical Charts, NOAA/OceanGrafix Charts-on-Demand", Richard Sillcox.

Canadian Hydrographic Conference 2002, Toronto,
"Print on Demand for Nautical Charting Products", David B. Enabnit.

Ocean Navigator Online, "Print on demand", Richard K. Hubbard.