@article{10_37236_2747,
     author = {Jean-Fran\c{c}ois Marckert},
     title = {Directed animals, quadratic systems and rewriting systems},
     journal = {The electronic journal of combinatorics},
     year = {2012},
     volume = {19},
     number = {3},
     doi = {10.37236/2747},
     zbl = {1253.05082},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/2747/}
}