1. Asymptotic Notation  
   Eric Weisstein, MathWorld, Wolfram Research Inc., Champaign, IL  
2. Landau Symbols  
   Eric Weisstein, MathWorld, Wolfram Research Inc., Champaign, IL  
3. Taylor Series and Truncation Error in t    
   Tony Mezzacappa, Computational Science Education Project, U.S. Department of Energy   
4. Numerical differentiation and truncation error      
   Sandra C. Chapman, Astrophysics & Physics Dept., University of Warwick, Coventry, UK  
5. Error estimate     
   E. Bruce Pitman, Department of Mathematics, State University of New York, Buffalo, NY    
6. Accuracy     
   Peter MacNeice, Space Sciences Project, NASA/Goddard Space Flight Center, Greenbelt, MD     
7. Numerical Schemes  
   Hugo Cornelis, Theoretical Neurobiology, University of Antwerp
8. Big-O Asymptotic Notation     
   MathSoft Engineering & Education, Inc., Cambridge, MA
9. Asymptotic Error Expansion     
   Cheung Sau Hung, Dept. of Math., Hong Kong Baptist University, Kowloon Tong, Hong Kong
10. Local Truncation Error for the Euler Method     
    Dinesh Manocha, Dept. of Computer Science, University of N. Carolina, Chapel Hill, NC   
11. Rounding Error vs. Truncation Error applet
    Michael Heath; et al, Computational Science and Engr., Univ. of Illinois, Urbana-Champaign, IL  
12. Big O notation  
    Wikipedia, the free encyclopedia.
13. Big-O notation  
    Paul E. Black, National Inst. of Standards and Tech., Gaithersburg, MD  
14. Big-O Notation  
    Mechanical Engineering, University of California, Berkeley, CA  
15. Big-O   
    Chris Caldwell, University of Tennessee at Martin, TN  
16. Big O Notaion  
    Richard Varron, William Patterson University, Wayne, NJ  
17. Complexity and Big-O Notation  
    Rebecca Hasti, Computer Sciences Dept., University of Wisconsin-Madison, WI  
18. Big-O Notation and Algorithm Analysis  
    Dan Ellard,  E. E. and Computer Science Dept., Harvard University, Cambridge, MA  
19. Big O notation  
    ezResult.com  

(c) John H. Mathews 2004