Estadisticas : Roundtrip feedback in open data portals: analysis of input and output channels Aziz, Abdul Visitas:137 96 ( Estados Unidos de América ) 17 ( Singapur ) 10 ( Reino Unido ) 4 ( China ) 4 ( Finlandia ) 2 ( Alemania ) 2 ( España ) 1 ( Vietnam ) 1 ( Letonia ) Descargas: 148