@article{10_4064_cm90_1_5,
     author = {J. Ga/luszka},
     title = {Two-generated idempotent groupoids
with small clones},
     journal = {Colloquium Mathematicum},
     pages = {59--68},
     publisher = {mathdoc},
     volume = {90},
     number = {1},
     year = {2001},
     doi = {10.4064/cm90-1-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm90-1-5/}
}