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%Aigaion2 BibTeX export from 
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@MISC{sacyr_patent2009,
        author = {Esteban, Antonio and Gonzalez-Jimenez, Javier and Ramírez-Rodríguez, Antonio and Blanco, José-Luis and Moreno, Francisco-Angel and Arevalo-Espejo, Vicente and Galindo, Cipriano},
         month = {{{mar}}},
         title = {Vehículo terrestre para el análisis topográfico de firmes de infraestructuras lineales (in Spanish)},
          year = {2009},
  howpublished = {ES1069405 U},
           url = {invenes.oepm.es/InvenesWeb/detalle?referencia=U200802582}
}