@article{CM_1980__41_3_337_0,
     author = {Cox, David A. and Parry, Walter R.},
     title = {Torsion in elliptic curves over $k(t)$},
     journal = {Compositio Mathematica},
     pages = {337--354},
     publisher = {Sijthoff et Noordhoff International Publishers},
     volume = {41},
     number = {3},
     year = {1980},
     mrnumber = {589086},
     zbl = {0442.14015},
     language = {en},
     url = {http://www.numdam.org/item/CM_1980__41_3_337_0/}
}