The text of the Saint-Malo declaration of 4 December 1998.
Text of the Declaration on operationality of ESDP - Laeken
The text of the Presidency Conclusions of the Helsinki European Council of 10 and 11 December 1999.
Here you can find the core documents on ESDP/CSDP beginning from
2001. Just click on the year and than look for the document with 'Core
documents' in its title.
Gnesotto, N. (Ed.) (2004) EU Security and Defence Policy. The first five years (1999-2004). Paris: European Union Institute for Security Studies.
Grevi, G., Helly, D. and Keohane, D. (Eds.) (2009) European Security and Defence Policy. The first 10 years (1999-2009). Paris: European Union Institute for Security Studies. (http://www.iss.europa.eu/uploads/media/ESDP_10-web.pdf)