@article{10_4064_aa109_4_6,
     author = {Stephen D. Cohen and Sophie Huczynska},
     title = {Primitive free quartics with specified norm and trace},
     journal = {Acta Arithmetica},
     pages = {359--385},
     publisher = {mathdoc},
     volume = {109},
     number = {4},
     year = {2003},
     doi = {10.4064/aa109-4-6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa109-4-6/}
}