Improving quality with well-written requirements

I discussed with a colleague about how to improve specifications and we agreed that one of the actions that would yield quality improvements with very little investment was to educate people in our organisation on how to write good requirements.
Unfortunately such a course is not available internally at Volvo Cars (don't ask me why). But a search found some useful pages that could serve as an introduction:

• The Story of the Paperclip: Writing Good Functional Requirements from StartupCTO
• Writing Good Requirements – The Big Ten Rules from Tyner Blain
• Writing good requirements is a lot like writing good code by Jim Heumann, IBM
• Writing Good Requirements (A Requirements Working Group Information Report)
• SMART Requirements by Mike Mannion and Barry Keepence