@article{MZ_1975__141_172171,
     author = {J\"urgen Hurrelbrink and Ulf Rehmann},
     title = {Eine endliche {Pr\"asentation} der {Gruppe} {G2} {(Z).}},
     journal = {Mathematische Zeitschrift},
     pages = {243--252},
     publisher = {mathdoc},
     volume = {141},
     year = {1975},
     zbl = {0284.20035},
     url = {http://geodesic.mathdoc.fr/item/MZ_1975__141_172171/}
}