Addendum: Common Transversals of Plane Sets
Ronald Harrop, R. Rado · Journal of the London Mathematical Society · 1958
Results closely related to those proved in our paper “Common transversal of plane sets” [Journal London Math. Soc. 33 (1958), 85–95] have been obtained by N. H. Kuiper and published in his paper “On convex sets and lines in the planes” [Proc. Koninkl. Nederl. Akademie van Wetenschappen Amsterdam (Series A), 60 (1957), 272–283].