author        = "Díaz Foncea, M. and Marcuello, C. and Marcuello, Ch. and
                       Solorzano, M. and Navío, J. and Guzmán, C. and de la O
                       Barroso, M. and Rodríguez, M. J. and Santos, F. J. and
                       Fisac, R. and Alguacil, P. and Chaves, R. and Savall, T.
                       and Villajos, E.",
      title         = "{Social Enterprise in Spain: A Diversity of Roots and a
                       Proposal of Models}",
      year          = "2017",