Franz Georg Fuchs, Andrew D. McMurry, Siddhartha Mishra, Nils Henrik Risebro and Knut Waagan. (2010). Finite Volume Methods for Wave Propagation in Stratified Magneto-Atmospheres.
            <i>Communications in Computational Physics</i>. <i>7</i> (3).
            473-509.
         doi:10.4208/cicp.2009.08.154