@article{JRAM_1960__203_150428,
     author = {J.W.S. Cassels},
     title = {Arithmetic on curves of genus 1. {II.} {A} general result.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {174--208},
     publisher = {mathdoc},
     volume = {203},
     year = {1960},
     zbl = {0094.02604},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1960__203_150428/}
}