@article{10_4064_aa115_1_3,
     author = {Yasutsugu Fujita},
     title = {Torsion subgroups of elliptic curves with
 non-cyclic torsion over ${\Bbb Q}$ in elementary
 abelian 2-extensions of ${\Bbb Q}$},
     journal = {Acta Arithmetica},
     pages = {29--45},
     publisher = {mathdoc},
     volume = {115},
     number = {1},
     year = {2004},
     doi = {10.4064/aa115-1-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa115-1-3/}
}