@article{Apt:1981:TYH:357146.357150,
    Address = {New York, NY, USA},
    Author = {Apt, Krzysztof R.},
    File = {Ten Years of Hoare's Logic A Survey - Part I - Apt (0) (0) - a - a - e.pdf},
    ISSN = {0164-0925},
    Journal = {ACM Trans. Program. Lang. Syst.},
    Keywords = {axiomatic semantics},
    Month = {October},
    Number = {4},
    Pages = {431--483},
    Publisher = {ACM},
    Title = {Ten Years of Hoare's Logic: A Survey - Part I},
    URL = {http://doi.acm.org/10.1145/357146.357150},
    Volume = {3},
    Year = {1981},
    acmid = {357150},
    bdsk-url-1 = {http://doi.acm.org/10.1145/357146.357150},
    bdsk-url-2 = {http://dx.doi.org/10.1145/357146.357150},
    date-added = {2012-04-15 09:06:18 +0100},
    date-modified = {2013-01-05 22:15:30 +0000},
    issue_date = {Oct. 1981},
    numpages = {53},
    doi = {10.1145/357146.357150}
}

@article{Apt:1981:TYH:357146.357150, Address = {New York, NY, USA}, Author = {Apt, Krzysztof R.}, File = {Ten Years of Hoare's Logic A Survey - Part I - Apt (0) (0) - a - a - e.pdf}, ISSN = {0164-0925}, Journal = {ACM Trans. Program. Lang. Syst.}, Keywords = {axiomatic semantics}, Month = {October}, Number = {4}, Pages = {431--483}, Publisher = {ACM}, Title = {Ten Years of Hoare's Logic: A Survey - Part I}, URL = {http://doi.acm.org/10.1145/357146.357150}, Volume = {3}, Year = {1981}, acmid = {357150}, bdsk-url-1 = {http://doi.acm.org/10.1145/357146.357150}, bdsk-url-2 = {http://dx.doi.org/10.1145/357146.357150}, date-added = {2012-04-15 09:06:18 +0100}, date-modified = {2013-01-05 22:15:30 +0000}, issue_date = {Oct. 1981}, numpages = {53}, doi = {10.1145/357146.357150} }