@article{10_4153_CMB_1994_068_9,
     author = {Evans, Martin J.},
     title = {Presentations of the {Free} {Metabelian} {Group} of {Rank} 2},
     journal = {Canadian mathematical bulletin},
     pages = {468--472},
     year = {1994},
     volume = {37},
     number = {4},
     doi = {10.4153/CMB-1994-068-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1994-068-9/}
}