@article{EXMA_1994__3_2_225045,
     author = {Ryba, Alexander J.E. and Wilson, Robert A.},
     title = {Matrix generators for the {Harada-Norton} group.},
     journal = {Experimental mathematics},
     pages = {137--145},
     publisher = {mathdoc},
     volume = {3},
     number = {2},
     year = {1994},
     zbl = {0831.20016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMA_1994__3_2_225045/}
}