@article{AFM_1983_8_2_a9,
     author = {Wolfram Koepf},
     title = {Close-to-convex functions and linear-invariant families},
     journal = {Annales Fennici Mathematici},
     pages = {349--355},
     publisher = {mathdoc},
     volume = {8},
     number = {2},
     year = {1983},
     doi = {10.5186/aasfm.1983.0815},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1983.0815/}
}