@article{Mckenzie_1970, title={Equational Bases for Lattice Theories.}, volume={27}, url={https://www.mscand.dk/article/view/10984}, DOI={10.7146/math.scand.a-10984}, journal={MATHEMATICA SCANDINAVICA}, author={Mckenzie, Ralph}, year={1970}, month={Jun.}, pages={24–38} }