@article{10_4064_sm152_3_4,
     author = {Jozef Bobok},
     title = {The topological entropy versus level sets for interval maps},
     journal = {Studia Mathematica},
     pages = {249--261},
     year = {2002},
     volume = {152},
     number = {3},
     doi = {10.4064/sm152-3-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm152-3-4/}
}