Training materials
Difficulty level: Not specified
and Authors: Wolfgang Maier
and Contributors: Björn Grüning or Christopher Barnett or Eija Korpelainen @eija, ekorpelainen@gmail.com or Erik Hjerde or Manimozhiyan Arumugam or Marek Vrbacky or Mr. William Edward Hill or Ms. Yo Yehudi or Nils Peder Willassen or Pip Griffin or Prof. Richard Baldock