Christophe De Luigi Eric Moreau Optimal Joint Diagonalization of Complex Symmetric Third-Order Tensors. Application to Separation of Non Circular Signals. 25-32 2007 conf/ica/2007 ICA http://dx.doi.org/10.1007/978-3-540-74494-8_4 db/conf/ica/ica2007.html#LuigiM07