R. Wayne Johnson, Mark Strickland and David Gerke, NASA Electronic Parts and Packaging Program. "3-D Packaging: A Technology Review." June 23, 2005. Retrieved July 31, 2015
Riley, George (2009-01-30). "Flipchips: Tutorial #1". Archived from the original on January 30, 2009. Retrieved 2016-04-07.{{cite web}}: CS1 maint: unfit URL (link)