http://xyst.i2p/papers.html
This paper describes the hydro scheme implemented in Xyst as RieCG . R. Lohner, C. Yang, J. Cebral, F. Camelli, O. Soto, J. Waltz, Improving the speed and accuracy of projection-type incompressible flow solvers , Computer methods in applied mechanics and engineering, 195(23), pp.3087-3109, 2006.