@article{10_4064_sm211_2_3,
     author = {Biagio Ricceri},
     title = {Another fixed point theorem for nonexpansive potential operators},
     journal = {Studia Mathematica},
     pages = {147--151},
     publisher = {mathdoc},
     volume = {211},
     number = {2},
     year = {2012},
     doi = {10.4064/sm211-2-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm211-2-3/}
}