@article{MZ_1978__164_172772,
     author = {W. Arendt and H.H. Schaefer and M. Wolff},
     title = {On {Lattice} {Isomorphisms} with {Positive} {Real} {Spectrum} and {Groups} of {Positive} {Operators.}},
     journal = {Mathematische Zeitschrift},
     pages = {115--124},
     publisher = {mathdoc},
     volume = {164},
     year = {1978},
     zbl = {0377.47026},
     url = {http://geodesic.mathdoc.fr/item/MZ_1978__164_172772/}
}