@article{Martens:2007:SOS:1324185.1324188,
    Address = {New York, NY, USA},
    Author = {Martens, Wim and Neven, Frank and Schwentick, Thomas},
    File = {Simple off the Shelf Abstractions for XML Schema - Martens, Neven, Schwentick (0) (0) - a - a - h.pdf},
    ISSN = {0163-5808},
    Journal = {SIGMOD Rec.},
    Keywords = {Relax NG and unranked trees},
    Month = {September},
    Number = {3},
    Pages = {15--22},
    Publisher = {ACM},
    Title = {Simple off the Shelf Abstractions for XML Schema},
    URL = {http://doi.acm.org/10.1145/1324185.1324188},
    Volume = {36},
    Year = {2007},
    acmid = {1324188},
    bdsk-url-1 = {http://doi.acm.org/10.1145/1324185.1324188},
    bdsk-url-2 = {http://dx.doi.org/10.1145/1324185.1324188},
    date-added = {2017-01-16 15:41:04 +0000},
    date-modified = {2017-01-23 08:22:31 +0000},
    issue_date = {September 2007},
    numpages = {8},
    doi = {10.1145/1324185.1324188}
}

@article{Martens:2007:SOS:1324185.1324188, Address = {New York, NY, USA}, Author = {Martens, Wim and Neven, Frank and Schwentick, Thomas}, File = {Simple off the Shelf Abstractions for XML Schema - Martens, Neven, Schwentick (0) (0) - a - a - h.pdf}, ISSN = {0163-5808}, Journal = {SIGMOD Rec.}, Keywords = {Relax NG and unranked trees}, Month = {September}, Number = {3}, Pages = {15--22}, Publisher = {ACM}, Title = {Simple off the Shelf Abstractions for XML Schema}, URL = {http://doi.acm.org/10.1145/1324185.1324188}, Volume = {36}, Year = {2007}, acmid = {1324188}, bdsk-url-1 = {http://doi.acm.org/10.1145/1324185.1324188}, bdsk-url-2 = {http://dx.doi.org/10.1145/1324185.1324188}, date-added = {2017-01-16 15:41:04 +0000}, date-modified = {2017-01-23 08:22:31 +0000}, issue_date = {September 2007}, numpages = {8}, doi = {10.1145/1324185.1324188} }