On the 11th April 2013 there were 596,000 webpages listed by Google with the search term 'Paul Friedlander light art'. This short list below is just the first few I found and is not intended to be representative.
Many websites repeat the same images but with different comments, some are more unusual. Any serious scholar should keep searching, some of the sites even surprised me. A few are mistakes but many do appear to have content about my work. A good starting point for a more comprehensive search is:
Google image search
Thank you everyone, keep up the good work!
My Modern Met
Things Worth Describing