@article{MAN_1982__261_182901,
     author = {Helmut Hofer},
     title = {Variational and {Topological} {Methods} in {Partially} {Ordered} {Hilbert} {Spaces.}},
     journal = {Mathematische Annalen},
     pages = {493--514},
     publisher = {mathdoc},
     volume = {261},
     year = {1982},
     zbl = {0488.47034},
     url = {http://geodesic.mathdoc.fr/item/MAN_1982__261_182901/}
}