Figure 1From: An integral equation representation for American better-of option on two underlying assetsThe continuation region CR, the exercise region \({\mathbf{ER}}={\mathbf{ER}}_{up}\cup{\mathbf{ER}}_{low}\), and the free boundaries \(\xi _{up}(t)\), \(\xi _{low}(t)\) of \({\mathcal{P}}(t,z)\)Back to article page