@article{RSMUP_1998__99__161_0,
     author = {Mantovan, Elena},
     title = {Additive extensions of a {Barsotti-Tate} group},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {161--185},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {99},
     year = {1998},
     mrnumber = {1636599},
     zbl = {0919.14028},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_1998__99__161_0/}
}