@article{IM_1971__15_142124,
     author = {I.G. MacDonald},
     title = {Affine {Root} {Systems} and {Dedekind's} {?-Function.}},
     journal = {Inventiones mathematicae},
     pages = {91--143},
     publisher = {mathdoc},
     volume = {15},
     year = {1971},
     zbl = {0244.17005},
     url = {http://geodesic.mathdoc.fr/item/IM_1971__15_142124/}
}