@article{10_4064_am_25_4_449_455,
     author = {Janusz Mierczy\'nski},
     title = {Smoothness of unordered curves in two-dimensional strongly competitive systems},
     journal = {Applicationes Mathematicae},
     pages = {449--455},
     publisher = {mathdoc},
     volume = {25},
     number = {4},
     year = {1999},
     doi = {10.4064/am-25-4-449-455},
     zbl = {1005.34042},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-25-4-449-455/}
}