@UNPUBLISHED{Ott.Ziai-08,
  author = {Niels Ott and Ramon Ziai},
  title = {{ICALL} Activities for Gerunds vs. To-infinitives: A Constraint-Grammar-based
	extension to the {New} {WERTi} System},
  note = {Unplublished term paper for the course 
	{\em Using Natural Language Processing to Foster Language Awareness
	in Second Language Learning} taught in summer 2008 at T\"{u}bingen	
	University by Detmar Meurers},
  year = {2008},
  url = {http://drni.de/zap/werti-gerunds}
}