@article{CSIS_2007_4_2_a4,
     author = {Julien Cervelle and R\'emi Forax and Gilles Roussel},
     title = {A simple implementation of grammar libraries},
     journal = {Computer Science and Information Systems},
     publisher = {mathdoc},
     volume = {4},
     number = {2},
     year = {2007},
     url = {http://geodesic.mathdoc.fr/item/CSIS_2007_4_2_a4/}
}