@article{10_4064_aa115_3_6,
     author = {C. U. Jensen},
     title = {On the number of real roots of a solvable polynomial},
     journal = {Acta Arithmetica},
     pages = {255--263},
     publisher = {mathdoc},
     volume = {115},
     number = {3},
     year = {2004},
     doi = {10.4064/aa115-3-6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa115-3-6/}
}