Philippe de Groote Markus Egg Laura Kallmeyer Formal Grammar - 14th International Conference, FG 2009, Bordeaux, France, July 25-26, 2009, Revised Selected Papers 5591 2011 http://dx.doi.org/10.1007/978-3-642-20169-1 978-3-642-20168-4 FG Lecture Notes in Computer Science Springer db/conf/fg/fg2009.html