%0 Journal Article %A Yves Nievergelt %T Aitken's and Steffensen's accelerations in several variables. %J Numerische Mathematik %D 1991 %P 295-310 %V 59 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1991__59_8_133551/ %F NUMA_1991__59_8_133551