A handy reference for innovation/entrepreneurship scholars. It is the latest in Elsevier's Handbook Series. The newly released two volume set is packed with great articles, but at almost $250 on Amazon, it's really suited for specialists in the field (those with lots of grant money). But look for it at your nearest university library, if it's not your immediate field and you have an interest.
It is edited by Bronwyn H. Hall and Nathan Rosenberg, two leaders in the field. Check it out.