@article{10_4064_cm_25_1_1_10,
     author = {J. H. Folkman and R. L. Graham},
     title = {On highly non-associative groupoids},
     journal = {Colloquium Mathematicum},
     pages = {1--10},
     publisher = {mathdoc},
     volume = {25},
     number = {1},
     year = {1972},
     doi = {10.4064/cm-25-1-1-10},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-25-1-1-10/}
}