@article{Hutton:1999:TUE:968578.968579,
    Address = {New York, NY, USA},
    Author = {Hutton, Graham},
    File = {fold (0) - a - a - c.pdf},
    ISSN = {0956-7968},
    Journal = {J. Funct. Program.},
    Month = {July},
    Number = {4},
    Pages = {355--372},
    Publisher = {Cambridge University Press},
    Title = {A Tutorial on the Universality and Expressiveness of Fold},
    URL = {http://dx.doi.org/10.1017/S0956796899003500},
    Volume = {9},
    Year = {1999},
    acmid = {968579},
    bdsk-url-1 = {http://dx.doi.org/10.1017/S0956796899003500},
    date-added = {2018-03-17 11:12:36 +0000},
    date-modified = {2018-03-17 11:12:36 +0000},
    issue_date = {July 1999},
    numpages = {18},
    doi = {10.1017/S0956796899003500}
}

@article{Hutton:1999:TUE:968578.968579, Address = {New York, NY, USA}, Author = {Hutton, Graham}, File = {fold (0) - a - a - c.pdf}, ISSN = {0956-7968}, Journal = {J. Funct. Program.}, Month = {July}, Number = {4}, Pages = {355--372}, Publisher = {Cambridge University Press}, Title = {A Tutorial on the Universality and Expressiveness of Fold}, URL = {http://dx.doi.org/10.1017/S0956796899003500}, Volume = {9}, Year = {1999}, acmid = {968579}, bdsk-url-1 = {http://dx.doi.org/10.1017/S0956796899003500}, date-added = {2018-03-17 11:12:36 +0000}, date-modified = {2018-03-17 11:12:36 +0000}, issue_date = {July 1999}, numpages = {18}, doi = {10.1017/S0956796899003500} }