%0 Journal Article %A Shepherd-Barron, N. I. %T Invariant theory for $S_5$ and the rationality of $M_6$ %J Compositio Mathematica %D 1989 %P 13-25 %V 70 %N 1 %I Kluwer Academic Publishers %U http://archive.numdam.org/item/CM_1989__70_1_13_0/ %G en %F CM_1989__70_1_13_0