@article{10_1017_S0017089500005747,
     author = {Singerman, David},
     title = {Orientable and non-orientable {Klein} surfaces with maximal symmetry},
     journal = {Glasgow mathematical journal},
     pages = {31--34},
     year = {1985},
     volume = {26},
     number = {1},
     doi = {10.1017/S0017089500005747},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500005747/}
}