@article{MAN_1995__302_2_165340,
     author = {Hubert Flenner and Wolfgang Vogel},
     title = {Joins, tangencies and intersections.},
     journal = {Mathematische Annalen},
     pages = {489--506},
     publisher = {mathdoc},
     volume = {302},
     number = {2},
     year = {1995},
     zbl = {0844.14002},
     url = {http://geodesic.mathdoc.fr/item/MAN_1995__302_2_165340/}
}