<sod>* [http://www.isthe.com/chongo/tech/math/number/howhigh.html ''How high can you count?''] by [[Landon Curt Noll]].<eod>
<sod>* [http://www.isthe.com/chongo/tech/math/number/howhigh.html ''How high can you count?''] by [[Landon Curt Noll]], which describes a slightly different system from the one here<eod>