@article{MZ_1986__193_173794,
     author = {Jos\'e L. Fern\'andez},
     title = {Singularities of {Inner} {Functions.}},
     journal = {Mathematische Zeitschrift},
     pages = {393--396},
     publisher = {mathdoc},
     volume = {193},
     year = {1986},
     zbl = {0608.30036},
     url = {http://geodesic.mathdoc.fr/item/MZ_1986__193_173794/}
}