1. Simultaneous Management: Managing Projects in an Era of Uncertainty and Accelerated Speed;Laufer,1996
2. Goals-and-methods matrix: coping with projects with ill defined goals and/or methods of achieving them;Turner;International Journal of Project Management,1993
3. Uncertainty and project objectives;Howell;Project Appraisal,1993
4. INTERNET—history and future strategy;Gutsch,1988
5. How to plan and control with PERT;Miller;Harvard Business Review,1962