1 

     2 

     3 @Unpublished{GasarchBlog,

     4   author =       {L.~Fortnow and W.~I.~Gasarch},

     5   title =        {{P}roving {DFA}-{L}angs {C}losed {U}nder {C}oncat and * {W}ithout {U}sing {E}quiv to 

     6                   {NDFA's}},

     7   note =         {Retrieved \today, from \url{http://blog.computationalcomplexity.org}},

     8   year =         {2013}

     9 }

    10 

    11 @article{Gelade12,

    12   author    = {W.~Gelade and F.~Neven},

    13   title     = {{S}uccinctness of the {C}omplement and {I}ntersection of {R}egular

    14                {E}xpressions},

    15   journal   = {ACM Transactions on Computational Logic},

    16   volume    = {13},

    17   number    = {1},

    18   year      = {2012},

    19   pages     = {4:1--4:21},

    20 }

    21 

    22