@article{MAN_1991__291_1_164894,
     author = {David Harbater},
     title = {Arithmetic discriminants and horizontal intersections.},
     journal = {Mathematische Annalen},
     pages = {705--724},
     publisher = {mathdoc},
     volume = {291},
     number = {1},
     year = {1991},
     zbl = {0724.14015},
     url = {http://geodesic.mathdoc.fr/item/MAN_1991__291_1_164894/}
}