@article{ARM_2007__43_5_a6,
     author = {Hadzhilazova, Mariana and Mladenov, Iva{\"\i}lo M. and Oprea, John},
     title = {Unduloids and their geometry},
     journal = {Archivum mathematicum},
     pages = {417--429},
     publisher = {mathdoc},
     volume = {43},
     number = {5},
     year = {2007},
     mrnumber = {2381785},
     zbl = {1199.53008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_2007__43_5_a6/}
}