@incollection{SMO84,
	author={J.F. Dunne and J.H. Wright},
	booktitle={System Modelling and Optimisation},
	editor={P. Thoft-Christensen},
	pages={566-576},
	publisher={Springer-Verlag},
	title={Threshold crossings in nonlinear systems and ship capsize prevention},
	year=1984,
}