Some great and very necessary foundational work studying researchers and discovery services, from RIN in the UK.
interviews with some 400 researchers and 50 librarians from a range of institutions and subjects and geographical locations
The report is 113 pages long :(
I've printed the first 10 pages - looks like interesting stuff.
via RSS feed RIN - What's New
As this study shows, researchers devote considerable amounts of time and effort to using a wide range of services to find the even wider range of information resources they need to pursue their research.