@article{IM_1968__5_141905,
     author = {J.S. MILNE},
     title = {Extensions of {Abelian} {Varieties} {Defined} {Over} a {Finite} {Field.}},
     journal = {Inventiones mathematicae},
     pages = {63--84},
     publisher = {mathdoc},
     volume = {5},
     year = {1968},
     zbl = {0205.24901},
     url = {http://geodesic.mathdoc.fr/item/IM_1968__5_141905/}
}