Updating misc. references:
* Novascone, 2013c.
* Nam, 2008
* Rammerstorfer, 2008
* Mahadevan, 2010.
* Amar, 2011
* Kirk, 2011
* Camata, 2011
* Hussan_2011 -> Hussan_2012

Also spell checked references, although this is a pretty useless exercise.

Updated the references webpage.

Updated citation statistics figure.