Addison.Wesley.The.Software.Project.Managers.Bridge.to.Agility.May.2008
Management - Tasks, Responsibilities, Practices by Peter Drucker
Addison.Wesley.Implementing.Lean.Software.Development.Sep.2006
Auerbach.Publications.Software.Testing.and.Continuous.Quality.Improvement.2nd.Edition
Radical Project Management

Well, not sure if this article is interesting for you, but definitely needed for me :) Now reading second book from the list, pretty interesting beginning :)
If you have something else to suggest - you are always welcome.

Project Management curriculum in University of British Columbia.

The Certificate in Project Management 100% online program was created for those who want a flexible learning environment. The curriculum is delivered in four 100% online courses focused on PMI standards with tutorials, exercises, case studies and assignments.
http://www.tech.ubc.ca/project/curric_online.html

Interesting courses for future growth. Expensive as for me but very beneficial to my mind.
Unfortunately I'm half an hour late for the spring session but I aim to subscribe for the autumn session.