Added "Extracting Data from NoSQL Databases: A Step towards Interactive Visual Analysis of NoSQL Data"

free-programming-books.md

@@ -1042,6 +1042,7 @@ See also [TeX](#tex)
 
 ###NoSQL
 * [CouchDB: The Definitive Guide](http://books.couchdb.org/relax/)
+* [Extracting Data from NoSQL Databases: A Step towards Interactive Visual Analysis of NoSQL Data](http://publications.lib.chalmers.se/records/fulltext/155048.pdf) - Petter Näsholm
 * [The Little MongoDB Book](http://openmymind.net/2011/3/28/The-Little-MongoDB-Book)
 * [The Little Redis Book](http://openmymind.net/2012/1/23/The-Little-Redis-Book/)
 * [The Little Riak Book](http://littleriakbook.com/)