Interesting articles

Two articles about the impact of ADS:

"Worldwide Use and Impact of the NASA Astrophysics Data System Digital Library"
abstract and .pdf

"The Bibliometric Properties of Article Readership Information"
abstract and .pdf

...and an article examining the relationships of scholars, libraries, and publishers:

Economics of scientific and biomedical journals: Where do scholars stand in the debate of online journal pricing and site license ownership between libraries and publishers?