@article{1102905682,
author = {Juul, Karsten},
title = {Some three-point subset properties connected with Menger's characterization of boundaries of plane convex sets.},
journal = {Pacific J. Math.},
volume = {61},
number = {2},
year = {1975},
pages = { 511-515},
language = {en},
url = {http://dml.mathdoc.fr/item/1102905682}
}
Juul, Karsten. Some three-point subset properties connected with Menger's characterization of boundaries of plane convex sets.. Pacific J. Math., Tome 61 (1975) no. 2, pp. 511-515. http://gdmltest.u-ga.fr/item/1102905682/