1. Parallel Algorithms for Forward and Back Substitution in Direct Solution of Sparse Linear Systems  
   Anshul Gupta, IBM T. J. Watson Research Center, Yorktown Heights NY  
2. Back Substitution  
   Ray Seyfarth, Computer Science and Statistics Dept., Univ. of Southern Mississippi, Hattiesburg  
3. Solution of Triangular Systems  
   Toomas Lepikult, Institute of Computer Science, Univ. of Tartu, Estonia    
4. The Back Substitution  
   Jakob Østergaard, Technical University of Denmark, Rævehøjvej, Denmark  
5. Subroutine: Back Substitution  
   J. Sienz, Dept. of Civil Engineering, University of Wales, Swansea, Wales, UK  
6. Triangular Algebraic Systems, Upper Triangular Form  
   Undergraduate Computational Engineering and Science, The Department of Energy (DOE), Krell Institute  
7. Gauss Elimination and Back Substitution  
   Franz J. Vesely, Institute of Experimental Physics, University of Vienna, Austria  
8. Gaussian Elimination with Back Substitution      
   Daniel F. Symancyk, Math. Dept., Anne Arundel Community College, Arnold, MD  
9. 'Easy' Systems of Linear Equations  
   Richard A. Tapia, Dept. Applied Math,, Rice University, Houston, TX  
10. Left-to-Right Elimination / Back Substitution  
    Richard Kuntz, Math. Dept,. Monmouth University, West Long Branch, NJ  
11. Forward and Backward Substitution  
    Farid Khoury, School of Mathematics, University of New South Wales, Australia  
12. Animation of Back Substitution  
    Alan Genz, Department of Mathematics, Washington State University, Pullman, WA  
13. Gaussian with Back Substitution  
    Juan Mario Restrepo, Math. Dept., University of Arizona, Tucson, AZ  

(c) John H. Mathews 2003