Xavier Dutoit Benjamin Schrauwen Jan Van Campenhout Dirk Stroobandt Hendrik Van Brussel Marnix Nuttin Pruning and regularization in reservoir computing. 1534-1546 2009 72 Neurocomputing 7-9 http://dx.doi.org/10.1016/j.neucom.2008.12.020 db/journals/ijon/ijon72.html#DutoitSCSBN09