See here a Clandestino related publication:

Immigration flows and the management of the EU’s Southern Maritime Borders, Documentos CIDOB, n. 17 Migraciones, december 2008 (pdf).

Authors: Dirk Godenau Vicente Manuel Zapata Hernadez, Paolo Cuttitta, Anna Triandafyllidou, Thanos Maroukis, Gemma Pinyol (ed.)