I spent few years with EU regulation, especially chemicals. I think Majone is the best way how to start. I am providing references for inspiration:
Majone, Giandomenico (1996) Regulating Europe. London: Routledge.
Majone, Giandomenico (1999) „The Credibility Crisis of Community Regulation“. Contribution to the 6th Biannual Internatonal Conference of ECSA, Pittsburgh, 2-5 June 1999.
Majone, Giandomenico (2002) Delegation of Regulatory Powers in a Mixed Polity, European Law Journal, vol. 8, no. 3, pp. 319–339).
You may also look at:
Selznick, P. (1985) „Focussing Organizational Research on Regulation“. in G. Noll (ed.) Regulatory Policy and the Social Sciences. Berkeley and Los Angeles: The University of Califormia Press.
Thatcher, Mark (2006) European Regulation. In: Richardson, Jeremy (Ed.): European Union. Power and Policy-making. Third Edition. Abingdon: Routledge.
Vos, Ellen (2005) „Independence, Accountability and transparency of European Regulatory Agencies“. In: Geradin, Damien, Muñoz a Petit, Nicolas (eds.): Regulation Trough Agencies in the EU: A New Paradigm of European Governance. Northampton: Edward Elgar Publishing.
Then there are dozens of articles dealing with specific regulatory policies.