Comparing Head-Mounted and Stationary Displays - - A user study. Users performing a generic search task decrease task performance time by roughly half when changed from stationary to head-mounted displays with matching traits.
FAQ: Visual Displays - - From sci.virtual-worlds with product information on visual displays in virtual interface technology, vendors and products.
HMD/ Headset Comparison - - Comparison table for many systems with traits, prices and pictures.
Microvision, Inc. - - Designs and develops laser retina scan personal displays for electronic and computing products for military, aerospace, medical, industrial, consumer electronics uses.
Review of HMD's - - List of types and traits, with some photographs, by Professor Steve Mann.