Blogs by Zach can be seen here of selected from the navigation bar:
1/28: The Agile Processes
2/11: Scope Management Processes in Agile
2/18: The Flexibility of Agile and Project Schedule Management
2/25: Estimating Costs in Agile
3/11: Project Quality Management
3/18: Motivation Theories in Agile
3/25: Project Communication in Agile
4/1: Risk Management in Agile
4/8: Procurement Processes in Agile