TY - JOUR T1 - La economía oculta A1 - Solana Álvarez, Julián Miguel PB - Real Centro Universitario Escorial-María Cristina YR - 2010 UL - http://biblioteca.ararteko.eus/Record/dialnet-ar-18-ART0000344886 AB - Externality concept is reviewed and, particularly, those produced by traffic jam. KW - Externalidades KW - coste KW - tráfico KW - obras públicas KW - Externalities KW - cost KW - traffic KW - civil works ER -