@article{EUG_1992__32_a10,
     author = {Elias A. Lipitakis and  George A. Gravvanis},
     title = {The numerical solution of large finite element systems by explicit preconditioning semi-direct methods},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}
},
     pages = {63-82},
     publisher = {mathdoc},
     volume = {32},
     year = {1992},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1992__32_a10/}
}