Before revision:  We finally investigate the existence of these long-term rates in two term structure methodologies, the Flesaker-Hughston model and the linear-rational model  .
After revision:  We finally investigate the existence of these long-term rates in two term structure methodologies, the Flesaker-Hughston model and the linear-rational model . A numerical example illustrates how our results can be used to estimate the non-optional component of a CoCo bond .