@article{10_4064_aa_66_3_229_236,
     author = {Teresa Crespo},
     title = {Central extensions of the alternating group as {Galois} groups},
     journal = {Acta Arithmetica},
     pages = {229--236},
     publisher = {mathdoc},
     volume = {66},
     number = {3},
     year = {1994},
     doi = {10.4064/aa-66-3-229-236},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-66-3-229-236/}
}