%0 Journal Article %A G.W. Reddien %A A. Greiwank %T The Approximation of Generalized Turning Points by Projection Methods with Superconvergence to the Critical Parameter. %J Numerische Mathematik %D 1986 %P 591-606 %V 48 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1986__48_133088/ %F NUMA_1986__48_133088