%0 Journal Article
%A Stephan Ruscheweyh
%A Roland Freund
%T On a Class of Chebyshev Approximation Problems Which Arise in Connection with a Conjugate Gradient Type Method.
%J Numerische Mathematik
%D 1986
%P 525-542
%V 48
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NUMA_1986__48_133085/
%F NUMA_1986__48_133085