@article{MZ_1987__195_183710,
     author = {Tilman Schanbacher},
     title = {Asymptotic {Behaviour} of {Positive} {Semigroups.}},
     journal = {Mathematische Zeitschrift},
     pages = {481--486},
     publisher = {mathdoc},
     volume = {195},
     year = {1987},
     zbl = {0611.47034},
     url = {http://geodesic.mathdoc.fr/item/MZ_1987__195_183710/}
}