@article{ETNA_2002__13__a3,
     author = {Strako\v{s}, Zden\v{e}k and Tich\'y, Petr},
     title = {On error estimation in the conjugate gradient method and why it works in finite precision computations},
     journal = {Electronic transactions on numerical analysis},
     pages = {56--80},
     publisher = {mathdoc},
     volume = {13},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ETNA_2002__13__a3/}
}