Wilfried N. Gansterer. Computing Orthogonal Decompositions of Block Tridiagonal or Banded Matrices. In Vaidy S. Sunderam, G. Dick van Albada, Peter M. A. Sloot, Jack Dongarra, editors, Computational Science - ICCS 2005, 5th International Conference, Atlanta, GA, USA, May 22-25, 2005, Proceedings, Part I. Volume 3514 of Lecture Notes in Computer Science, pages 25-32, Springer, 2005. [doi]