thraxil.org:

Erlang Challenge: Level 1 by anders pearsonMon 21 Aug 2006
Erlang Challenge: Level 2 (2) by anders pearsonWed 23 Aug 2006
Erlang Challenge: Level 3 by anders pearsonThu 24 Aug 2006
Erlang Challenge: Level 4 by anders pearsonFri 01 Sep 2006
Erlang Challenge: Level 2 by anders pearsonMon 21 Aug 2006
Erlang in Erlang by anders pearsonSat 02 Nov 2013