According to the ASEAN has the end-goal to the economic and financial integration in year 2015, it is very interesting to study the EU-style economic integration, which has been accepted as a model of regional integration. However, many scholars argue that a region that consists mostly of developing or less developed countries such as the ASEAN is unlikely to develop closer regional integration or as legalistic as the EU. Is it appropriate to compare the EU and the ASEAN?
Most salient issue is that monetary integration without fiscal control is highly problematic. Rapid expansion of membership especially to countries that do not share Western Europe's level of development and cultural attributes led to unsustainable expansion. The key for ASEAN now is depth and not breadth.
You can find couple of interesting articles comparing the EU and the ASEAN in the Asia Europe Journal. In the next issue which I co-edited and it is just about to be printed (but articles are available online now), there are some articles of your possible interest. You might find interesting Elisabetta Nadalutti's and Danielle Tan's articles on cross-border co-operation as well as Shaun Elder's article on post-crises lesson in financial regulations. Especially, Danielle's article I found very rich food for thinking about comparison between the EU and the ASEAN.