@article{10_4064_fm207_2_4,
     author = {Andrew D. Barwell},
     title = {A characterization of $\omega$-limit sets for piecewise
 monotone maps of the interval},
     journal = {Fundamenta Mathematicae},
     pages = {161--174},
     publisher = {mathdoc},
     volume = {207},
     number = {2},
     year = {2010},
     doi = {10.4064/fm207-2-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm207-2-4/}
}