Faber, Vance; Manteuffel, Thomas (1984), "Necessary and sufficient conditions for the existence of a conjugate gradient method", SIAM Journal on Numerical Analysis, 21 (2): 352–362, Bibcode:1984SJNA...21..352F, doi:10.1137/0721026, MR0736337.
Faber, Vance; Manteuffel, Thomas (1984), "Necessary and sufficient conditions for the existence of a conjugate gradient method", SIAM Journal on Numerical Analysis, 21 (2): 352–362, Bibcode:1984SJNA...21..352F, doi:10.1137/0721026, MR0736337.
harvard.edu
ui.adsabs.harvard.edu
Faber, Vance; Manteuffel, Thomas (1984), "Necessary and sufficient conditions for the existence of a conjugate gradient method", SIAM Journal on Numerical Analysis, 21 (2): 352–362, Bibcode:1984SJNA...21..352F, doi:10.1137/0721026, MR0736337.