@article{IM_1973__22_142238,
     author = {B. Mazur and J. Tate},
     title = {Points of {Order} 13 on {Elliptic} {Curves.}},
     journal = {Inventiones mathematicae},
     pages = {41--50},
     publisher = {mathdoc},
     volume = {22},
     year = {1973},
     zbl = {0268.14009},
     url = {http://geodesic.mathdoc.fr/item/IM_1973__22_142238/}
}