1. Complex Number  
   Eric Weisstein, World of Mathematics, Wolfram Res., Inc., Champaign, IL  
2. Complex number  
   Wikipedia, the free encyclopedia, Wikimedia Foundation  
3. Complex Numbers  
   Marcus Jones, Mathematical Sciences, University of Bath, UK  
4. Complex Numbers  
   James Vickers, Math. Dept., University of Southampton, Highfield, UK   
5. Complex Numbers  
   Michael Fowler, Physics Dept., University of Virginia, Charlottesville, VA
6. MathHelp Notebook on Complex Numbers  
   Geological Sciences Mathematics tutorial system, University College, London, UK  
7. The Polar Form of a Complex Number  
   Michael O'Neill, S.O.S MATHematics, El Paso, TX  
8. The Complex Plane  
   Michael O'Neill, S.O.S MATHematics, El Paso, TX  
9. Complex number to a complex power may be real  
   Alexander Bogomolny, Math. Prof., University of Iowa, Cut The Knot!
10. The Origin of Complex Numbers and the Notation "i"  
    Philip Spencer, University of Toronto Mathematics Network, Canada  
11. How to find the n-th roots of a complex number ?  
    Zachary S. Tseng, Math. Dept., Pennsylvania State Univ., University Park, PA
12. Complex Numbers  
    R. H. B. Exell, King Mongkut's University of Technology Thonburi, Bangkok  
13. Complex Numbers
    Jeff Praught, Physics Dept., Univ. of Prince Edward Island, Charlottetown, PE, Canada
14. Complex Numbers   
    Carl R. Spitznagel, Math. Dept., John Carroll University, Cleveland, OH  
15. Complex Numbers  
    Jeff Tupper, Computer Science Dept., University of Toronto, Canada  
16. Complex Numbers  
    Elizabeth Stapel, Western International University, Phoenix, AZ    
17. Complex Number Problems  
    Julius O. Smith, Computer Research in Music and Acoustics, Stanford Univ., CA  
18. Complex Numbers  
    Jeff Brown, Math. Dept., Univ. of North Carolina, Wilmington, NC  
19. Complex Numbers  applets  
    Junior Freshman Programming Project, Computer Science Department, Trinity College Dublin
20. Complex Numbers  applet  
    Sione Palu, Math. Dept., Univ. of Auckland, Ponsonby, Auckland, New Zealand  
21. Arithmetic Operations with Complex Numbers  applet  
    Walter Fendt, Paul-Klee-Gymnasium, Gersthofen, Germany
22. Arithmetic in the Complex Plane applet  
    R. F. Barrow, Maths Teacher, Tunbridge Wells in Kent, UK.
23. Complex Arithmetic  applet  
    Terence Tao, Analysis Group, Math. Dept. University of California Los Angeles, CA
24. ...  Complex Arithmetic  applet  
    Jeff Brown;  Russ Herman, Univ. of North Carolina, Wilmington, NC  
25. Complex Number applets  
    Kobayashi Ichiro,Mathematics Education and Technology, Japan  
26. Reverse polish notation complex number calculator applet  
    Dario Alpern, Universidad Tecnologica Nacional, Facultad Regional Buenos Aires
27. The exponential form of a complex number PDF  
    John Phelps, Math. Learning Centre, Loughborough University, Leicestershire, UK  

(c) John H. Mathews 2006