@article{JTNB_2001__13_2_339_0,
     author = {Bettner, Stefan and Schertz, Reinhard},
     title = {Lower powers of elliptic units},
     journal = {Journal de th\'eorie des nombres de Bordeaux},
     pages = {339--351},
     publisher = {Universit\'e Bordeaux I},
     volume = {13},
     number = {2},
     year = {2001},
     mrnumber = {1879662},
     zbl = {1003.11026},
     language = {en},
     url = {http://www.numdam.org/item/JTNB_2001__13_2_339_0/}
}