Changes

*[http://www.lawsofform.org/ Laws of Form Web Site]

*[http://www.lawsofform.org/ Laws of Form Web Site]

** Spencer-Brown (1973), [http://www.lawsofform.org/aum/session1.html Transcript Session One], [http://www.lawsofform.org/aum/ AUM Conference], Esalen, CA.

** Spencer-Brown, George (1973), [http://www.lawsofform.org/aum/session1.html Transcript Session One], [http://www.lawsofform.org/aum/ AUM Conference], Esalen, CA.

*[http://mathworld.wolfram.com/ MathWorld]

*[http://mathworld.wolfram.com/ MathWorld — A Wolfram Web Resource]

**[http://mathworld.wolfram.com/Spencer-BrownForm.html Spencer-Brown Form]

** Weisstein, Eric W., "Spencer-Brown Form", [http://mathworld.wolfram.com/Spencer-BrownForm.html Online].

*[http://www.math.uic.edu/~kauffman/ Louis H. Kauffman]

*[http://www.math.uic.edu/~kauffman/ Kauffman, Louis H.]

**[http://www.math.uic.edu/~kauffman/Arithmetic.htm Box Algebra, Boundary Mathematics, Logic, and Laws of Form]

**[http://www.math.uic.edu/~kauffman/Arithmetic.htm Box Algebra, Boundary Mathematics, Logic, and Laws of Form]