Lopes, Ana Paula2012-07-302012-07-302008http://hdl.handle.net/10400.22/5775th. European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2008) 8th. World Congress on Computational Mechanics (WCCM8)porInvariant subspacesEigenvectorsLanczos methodEigenvaluesGrassmann manifoldStiefel manifoldconference object