@article{10_4064_sm_3_1_114_118,
     author = {S. Mazurkiewicz},
     title = {Sur l'int\'egrale $\int_{0}^{1} {(f(x+t)+f(x-t)-2f(x))/t} dt},
     journal = {Studia Mathematica},
     pages = {114--118},
     publisher = {mathdoc},
     volume = {3},
     number = {1},
     year = {1931},
     doi = {10.4064/sm-3-1-114-118},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-3-1-114-118/}
}