@article{10_4064_aa147_3_2,
     author = {Laurent Bus\'e and Guillaume Ch\`eze and Salah Najib},
     title = {Noether forms for the study of
 non-composite rational functions and their spectrum},
     journal = {Acta Arithmetica},
     pages = {217--231},
     publisher = {mathdoc},
     volume = {147},
     number = {3},
     year = {2011},
     doi = {10.4064/aa147-3-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa147-3-2/}
}