@article{696521,
      recid = {696521},
      author = {García-Parrado, Alfonso,},
      title = {Progress in mathematical relativity, gravitation and  cosmology Proceedings of the Spanish Relativity Meeting  ERE2012, University of Minho, Guimaraes, Portugal, 3-7  September 2012 / [electronic resource] :},
      pages = {1 online resource (457 pages) :},
      url = {http://library.usi.edu/record/696521},
}