Nonlineartimeseriesmethodshavedevelopedrapidlyoveraquarterofacenturyandhavereachedanadvancedstateofmaturityduringthelastdecade.Implementationsofthesemethodsforexperimentaldataarenowwidelyacceptedandfairlyroutine,howevergenuinelyusefulapplicationsremainrare.Theaimofthisbookistofocus