@article{10_4153_CMB_2004_019_3,
     author = {Gr\"atzer, G. and Schmidt, E. T.},
     title = {Congruence {Class} {Sizes} in {Finite} {Sectionally} {Complemented} {Lattices}},
     journal = {Canadian mathematical bulletin},
     pages = {191--205},
     year = {2004},
     volume = {47},
     number = {2},
     doi = {10.4153/CMB-2004-019-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2004-019-3/}
}