Xiao, D., Fang, F., Pain, C., Navon, I., Elsheikh, A., Du, J., & Xiao, D. (2013). Non-linear Petrov–Galerkin methods for reduced order hyperbolic equations and discontinuous finite element methods. Journal of Computational Physics, 234, pp. 540-559. doi:10.1016/j.jcp.2012.10.011

Xiao, Dunhui, F. Fang, C.C Pain, I.M Navon, A.H Elsheikh, J. Du, and D. Xiao. "Non-linear Petrov–Galerkin Methods for Reduced Order Hyperbolic Equations and Discontinuous Finite Element Methods." Journal of Computational Physics 234 (2013): 540-559.

Xiao, Dunhui, et al. "Non-linear Petrov–Galerkin Methods for Reduced Order Hyperbolic Equations and Discontinuous Finite Element Methods." Journal of Computational Physics 234 (2013): 540-559.