virtual-earth.de/CG/cg-list/msg03677.html">http://www.virtual-earth.de/CG/cg-list/msg03677.html</A>
<A  HREF="http://stderr.org/pipermail/arisbe/2001-January/000167.html">http://stderr.org/pipermail/arisbe/2001-January/000167.html</A>

Differential Analytic Turing Automata (DATA):

<A  HREF="http://suo.ieee.org/email/msg03004.html">http://suo.ieee.org/email/msg03004.html</A>
<A  HREF="http://suo.ieee.org/email/msg03026.html">http://suo.ieee.org/email/msg03026.html</A>

Painted Cacti &amp; Propositional Calc