@article{10_4064_fm_102_1_9_12,
     author = {Zbigniew Grande},
     title = {Les ensembles de niveau et la monotonie d'une fonction},
     journal = {Fundamenta Mathematicae},
     pages = {9--12},
     publisher = {mathdoc},
     volume = {102},
     number = {1},
     year = {1979},
     doi = {10.4064/fm-102-1-9-12},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-102-1-9-12/}
}