@article{CM_1990__73_1_107_0,
     author = {Crew, Richard},
     title = {Universal extensions and $p$-adic periods of elliptic curves},
     journal = {Compositio Mathematica},
     pages = {107--119},
     publisher = {Kluwer Academic Publishers},
     volume = {73},
     number = {1},
     year = {1990},
     mrnumber = {1042455},
     zbl = {0742.14013},
     language = {en},
     url = {http://www.numdam.org/item/CM_1990__73_1_107_0/}
}