@article{MZ_1972__125_171693,
     author = {Peter Hess},
     title = {A {Remark} on a {Class} of {Linear} {Monotone} {Operators.}},
     journal = {Mathematische Zeitschrift},
     pages = {104--106},
     publisher = {mathdoc},
     volume = {125},
     year = {1972},
     zbl = {0229.47042},
     url = {http://geodesic.mathdoc.fr/item/MZ_1972__125_171693/}
}