@article{MZ_1987__196_173894,
     author = {Konstantin Athanassopoulos},
     title = {D+-Stable {Dynamical} {Systems} on {2-Manifolds.}},
     journal = {Mathematische Zeitschrift},
     pages = {453--462},
     publisher = {mathdoc},
     volume = {196},
     year = {1987},
     zbl = {0603.58008},
     url = {http://geodesic.mathdoc.fr/item/MZ_1987__196_173894/}
}