(c) Jean-Philippe BERNARDY
  Collection classes framework, 2005,2006
  Generalised Trie module
  Test framework
  Benchmark framework

(c) Paul JOHNSON 
  Ranged Sets, 2005,2006

(c) Adrian HEY
  AVL Tree library, 2004,2005,2006
  String specialized Trie library, 2005,2006

(c) Ross PATERSON
  Foldable class/module

(c) David PLACE
  Enum Set module

(c) Keith WANSBROUGH
  Trie module