@article{10_4064_sm_101_1_1_18,
     author = {Andrzej Granas},
     title = {Sur un principe g\'eom\'etrique en analyse convexe},
     journal = {Studia Mathematica},
     pages = {1--18},
     publisher = {mathdoc},
     volume = {101},
     number = {1},
     year = {1991},
     doi = {10.4064/sm-101-1-1-18},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-101-1-1-18/}
}