@article{JRAM_1936__175_149970, author = {Otto Haupt}, title = {\"Uber ebene {Punktmengen} mit \"uberall unendlicher {Kr\"ummung.}}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {221--223}, publisher = {mathdoc}, volume = {175}, year = {1936}, zbl = {0014.32701}, url = {http://geodesic.mathdoc.fr/item/JRAM_1936__175_149970/} }