@article{KJM_2006_29_a7,
     author = {M. S. Audu and A. Afolabi and E. Apine},
     title = {Transitive 3-groups of degree $3^n$ (n = 2,3)},
     journal = {Kragujevac Journal of Mathematics},
     pages = {71 },
     publisher = {mathdoc},
     volume = {29},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KJM_2006_29_a7/}
}