@article{10_4064_cm_21_2_191_196,
     author = {B. J\'onsson},
     title = {Relatively free lattices},
     journal = {Colloquium Mathematicum},
     pages = {191--196},
     publisher = {mathdoc},
     volume = {21},
     number = {2},
     year = {1970},
     doi = {10.4064/cm-21-2-191-196},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-21-2-191-196/}
}