%0 Journal Article %A Benzi, Michele %A Uçar, Bora %T Block triangular preconditioners for $M$-matrices and Markov chains %J Electronic transactions on numerical analysis %D 2007 %P 209-227 %V 26 %I mathdoc %U http://geodesic.mathdoc.fr/item/ETNA_2007__26__a14/ %G en %F ETNA_2007__26__a14