@article{10_4064_sm165_3_2,
     author = {Emanuele Casini},
     title = {Minimal displacement in {Hilbert} spaces},
     journal = {Studia Mathematica},
     pages = {215--219},
     publisher = {mathdoc},
     volume = {165},
     number = {3},
     year = {2004},
     doi = {10.4064/sm165-3-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm165-3-2/}
}