@article{DBLP:journals/ijfcs/LeeuwenW15,
  author    = {Jan van Leeuwen and
               Jir{\'{\i}} Wiedermann},
  title     = {Separating the Classes of Recursively Enumerable Languages Based on
               Machine Size},
  journal   = {Int. J. Found. Comput. Sci.},
  volume    = {26},
  number    = {6},
  pages     = {677--696},
  year      = {2015},
  url       = {http://dx.doi.org/10.1142/S0129054115500380},
  doi       = {10.1142/S0129054115500380},
  timestamp = {Thu, 12 Nov 2015 18:41:35 +0100},
  biburl    = {http://dblp2.uni-trier.de/rec/bib/journals/ijfcs/LeeuwenW15},
  bibsource = {dblp computer science bibliography, http://dblp.org}
}