books.google.com - Active galactic nuclei (AGN) are among the most spectacular objects known to astronomy. Yet, despite years of intense and wide-ranging research, the debate over their fundamental source of power continues. In this volume, the contributors address such topics as what evidence there is for and against...http://books.google.com/books/about/The_Nature_of_Compact_Objects_in_Active.html?id=hJsifwQRQyQC&utm_source=gb-gplus-shareThe Nature of Compact Objects in Active Galactic Nuclei