1. Customer relationships and extreme programming;Grisham,2005
2. Agile customer engagement: a longitudinal qualitative case study;Hanssen,2006
3. Great scrums need great product owners: unbounded collaboration and collective product ownership;Judy,2008
4. Challenges of migrating to agile methodologies;Nerur;Commun. ACM,2005
5. Agile undercover: when customer’s don’t collaborate;Hoda,2010