@article{1077475362, author = {Horn, Alfred and Valentine, F. A.}, title = {Some properties of $L$ -sets in the plane}, journal = {Duke Math. J.}, volume = {16}, number = {1}, year = {1949}, pages = { 131-140}, language = {en}, url = {http://dml.mathdoc.fr/item/1077475362} }
Horn, Alfred; Valentine, F. A. Some properties of $L$ -sets in the plane. Duke Math. J., Tome 16 (1949) no. 1, pp. 131-140. http://gdmltest.u-ga.fr/item/1077475362/