@article{MS2_1959__7_165724,
     author = {Ernest Michael},
     title = {Paraconvex {Sets.}},
     journal = {Mathematica Scandinavica},
     pages = {372--376},
     publisher = {mathdoc},
     volume = {7},
     year = {1959},
     zbl = {0093.12001},
     url = {http://geodesic.mathdoc.fr/item/MS2_1959__7_165724/}
}