1. Validation of a computer user satisfaction questionnaire to measure IS success in small business;Armstrong;Journal of Research and Practice in Information Technology,2005
2. The Practice of Social Research;Babbie,2001
3. The logical framework method for defining project success;Baccarini;Project Management Journal,1999
4. The high cost of software;Boehm,1975
5. Software Engineering Economics;Boehm,1981