@article{DMGAA_2010_30_1_a2,
     author = {Ricci, Gabriele},
     title = {Flocks in universal and {Boolean} algebras},
     journal = {Discussiones Mathematicae. General Algebra and Applications},
     pages = {45--69},
     publisher = {mathdoc},
     volume = {30},
     number = {1},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGAA_2010_30_1_a2/}
}