Biodiesel Magazine, Jan./Feb. 2014, by Ron Kotrba.
http://www.biodieselmagazine.com/articles/9483/elegant-engineering

"A recently issued U.S. patent, the culmination of more than five years of lab-scale and pilot-plant research at Texas Tech University [by Uzi Mann], provides simplicity and holds great promise for economical, large-scale biodiesel production."