Cloe Taddei-Ferretti Carlo Musio The Neural Net of Hydra and the Modulation of Its Periodic Activity. 123-137 1999 conf/iwann/1999-1 IWANN (1) db/conf/iwann/iwann1999-1.html#Taddei-FerrettiM99 http://dx.doi.org/10.1007/BFb0098167