1. Many codes are available, created by individuals and institutions, e.g., SOLDESIGN (M.I.T.), and by commercial outfits, e.g., COMSOL, ANSYS, ANSOFT.
2. D. Bruce Montgomery, Solenoid Magnet Design (Robert Krieger Publishing, New York, 1980).
3. R.J. Weggel (personal communication, 1999).
4. Francis Bitter, Magnets: The Education of a Physicist (Doubleday, New York, 1959).
5. Milan Wayne Garrett, “Calculation of fields, forces, and mutual inductances of current systems by elliptical integrals,” J. Appl. Phys. 34, 2567 (1963).