@article{EXMA_1995__4_1_226961,
     author = {Hulpke, Alexander},
     title = {Block systems of a {Galois} group.},
     journal = {Experimental mathematics},
     pages = {1--9},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {1995},
     zbl = {0976.12006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMA_1995__4_1_226961/}
}