Luiz M. Carvalho Wagner Fortes Luc Giraud Comparing Some Methods and Preconditioners for Hydropower Plant Flow Simulations. 391-404 2008 VECPAR http://dx.doi.org/10.1007/978-3-540-92859-1_35 conf/vecpar/2008 db/conf/vecpar/vecpar2008.html#CarvalhoFG08