@article{10_1007_s10587_015_0202_5,
     author = {Mike\v{s}, Josef and Strambach, Karl},
     title = {Shells of monotone curves},
     journal = {Czechoslovak Mathematical Journal},
     pages = {677--699},
     publisher = {mathdoc},
     volume = {65},
     number = {3},
     year = {2015},
     doi = {10.1007/s10587-015-0202-5},
     mrnumber = {3407599},
     zbl = {06537686},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10587-015-0202-5/}
}