@article{MZ_1973__133_171942,
     author = {Neil S. Trudinger},
     title = {A {Sharp} {Inequality} for {Subharmonic} {Functions} on {Two-Dimensional} {Manifolds.}},
     journal = {Mathematische Zeitschrift},
     pages = {75--80},
     publisher = {mathdoc},
     volume = {133},
     year = {1973},
     zbl = {0268.31003},
     url = {http://geodesic.mathdoc.fr/item/MZ_1973__133_171942/}
}