@article{KYB_1966_2_2_a5,
     author = {Sgall, Petr},
     title = {Ein mehrstufiges generatives {System}},
     journal = {Kybernetika},
     pages = {181--190},
     year = {1966},
     volume = {2},
     number = {2},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/KYB_1966_2_2_a5/}
}