Martin van Bruinessen 
Contemporary Developments in Indonesian Islam [PDF ebook] 

Indonesian Islam has been (and still is) largely known as Islam with 'smiling faces’. But in the last decade at least, drawing benefit from the democratic opening up, some figures and groups introduced radical Islamic ideas and praxis that have transnational origins that in turn could affect the future of Indonesian Islam. This book is an excellent anthology of this disturbing development brought about by the so-called 'conservative turn’ within certain elements of moderate Islam in the largest Muslim country in the world