http://arxiv.org/PS_cache/arxiv/pdf/070 ... 2135v1.pdf This is the academic paper from the Yale team which I dug up after following the /. links.
http://tf.nist.gov/general/pdf/1566.pdf - This is a paper from the NIST team. I'm not sure if it is the paper mentioned in the /. summary or not, but it seems relevant.