Merge pull request #1393 from mszczepanczyk/nielson

Add "Semantics with Applications"

free-programming-books.md

@@ -604,6 +604,7 @@ Original Source: [Free Programming books](http://stackoverflow.com/revisions/392
 * [Programming and Programming Languages](http://papl.cs.brown.edu/2014/index.html) - Shriram Krishnamurthi
 * [Programming in Martin-Löf's Type Theory](http://www.cse.chalmers.se/research/group/logic/book/) - Bengt Nordstroem
 * [Programming Languages: Application and Interpretation (2nd Edition)](http://www.cs.brown.edu/~sk/Publications/Books/ProgLangs/)
+* [Semantics with Applications: A Formal Introduction](http://www.daimi.au.dk/~bra8130/Wiley_book/wiley.html) - Hanne Riis Nielson, Flemming Nielson
 * [Structure and Interpretation of Computer Programs](http://mitpress.mit.edu/sicp/)
 * [Think Complexity](http://www.greenteapress.com/compmod/) - Allen B. Downey