%0 Journal Article %A Jaffe, David B. %T On sections of commutative group schemes %J Compositio Mathematica %D 1991 %P 171-196 %V 80 %N 2 %I Kluwer Academic Publishers %U http://www.numdam.org/item/CM_1991__80_2_171_0/ %G en %F CM_1991__80_2_171_0