@article{10_4064_sm_140_3_213_241,
     author = {S. J. Dilworth and Ralph Howard and James W. Roberts},
     title = {On the size of approximately convex sets in normed spaces},
     journal = {Studia Mathematica},
     pages = {213--241},
     publisher = {mathdoc},
     volume = {140},
     number = {3},
     year = {2000},
     doi = {10.4064/sm-140-3-213-241},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-140-3-213-241/}
}