@article{10_4064_cm_21_1_45_47,
     author = {G. Sz\'asz},
     title = {Independent subsets in semilattices},
     journal = {Colloquium Mathematicum},
     pages = {45--47},
     publisher = {mathdoc},
     volume = {21},
     number = {1},
     year = {1970},
     doi = {10.4064/cm-21-1-45-47},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-21-1-45-47/}
}