http://scholar.google.com/citations?hl=en&user=r4Zk4ikAAAAJ&view_op=list_works&gmla=AJsN-F5revrzpB2Lbj34QVvAHtaaeIxZx2zMThr8zcHTcYrguHHoHKITF1OTOjJTdv1Kiy1NCu0t1xH8Kx-kiLScy1isFP-f-vqh5IBmeb5DYfj2uIOo1pnwM7Nj1lZ82Qkj8Y7D4z0MJlq6WurQJcpY4MiqV2O0Qw