Institution: | (1) Department of Mathematics, University of Missouri, Columbia, Missouri 65211, USA;(2) Justus-Liebig-Universität Giessen, Lehrstuhl für Numerische Mathematik, Heinrich-Buff-Ring 44, 35392 Giessen, Germany;(3) Department of Mathematics, University of North Carolina at Wilmington, Wilmington, North Carolina 28403, USA |