R. Calmeau

Euroalert.net: Aggregating Public Procurement Data to Deliver Commercial Services to SMEs

José Luis Marín, J. Labra, M. Rodriguez, 2013 .

Hierarchy and Competition in CSCW applications: Model and case study

Yannis Dimitriadis, Ignacio Soto, J. I. Asensio, 1998 .

Query Expansion Methods and Performance Evaluation for Reusing Linking Open Data of the European Public Procurement Notices

Jose María Álvarez Rodríguez, José Emilio Labra Gayo, Ángel Marín, 2011, CAEPIA.