Mohit Gupta Srinivasa G. Narasimhan Legendre fluids: a unified framework for analytic reduced space modeling and rendering of participating media. 17-25 2007 conf/sca/2007 Symposium on Computer Animation http://doi.acm.org/10.1145/1272690.1272693 db/conf/sca/sca2007.html#GuptaN07