@article{DMGAA_2008_28_2_a3,
     author = {Brengos, Tomasz},
     title = {On covariety lattices},
     journal = {Discussiones Mathematicae. General Algebra and Applications},
     pages = {179--191},
     publisher = {mathdoc},
     volume = {28},
     number = {2},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGAA_2008_28_2_a3/}
}