My new book on the Western European radical left is finally out:
Chiocchetti, Paolo (2016). The radical left party family in Western Europe, 1989-2015. Abingdon: Routledge. ISBN:978-1-13865618-5. https://www.routledge.com//9781138656185.
You can order a hard copy from Routledge. Make sure to enter the code FLR40 at checkout for a 20% discount (£72.00 instead of £90.00).