@article{MS2_1971__28_166170,
     author = {Renate McLaughlin},
     title = {Some {Extremal} {Problems} for {Functions} {Univalent} in an {Annulus.}},
     journal = {Mathematica Scandinavica},
     pages = {129--138},
     publisher = {mathdoc},
     volume = {28},
     year = {1971},
     zbl = {0222.30013},
     url = {http://geodesic.mathdoc.fr/item/MS2_1971__28_166170/}
}