@article{MS2_1968__22_166042,
     author = {Bjarni Jonsson},
     title = {Equational {Classes} of {Lattices.}},
     journal = {Mathematica Scandinavica},
     pages = {187--196},
     publisher = {mathdoc},
     volume = {22},
     year = {1968},
     zbl = {0185.03601},
     url = {http://geodesic.mathdoc.fr/item/MS2_1968__22_166042/}
}