@article{10_4153_CMB_1998_051_3,
     author = {Burns, John and Ellis, Graham},
     title = {Inequalities for {Baer} {Invariants} of {Finite} {Groups}},
     journal = {Canadian mathematical bulletin},
     pages = {385--391},
     year = {1998},
     volume = {41},
     number = {4},
     doi = {10.4153/CMB-1998-051-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1998-051-3/}
}