1. Evaluating natural resources investments;Brennan;J. Bus.,1985
2. Mine valuations in the presence of a stochastic ore-grade;Evatt;Int. Assoc. Eng.,2010
3. The expected lifetime of an extraction project;Evatt;Proc. R. Soc. A,2011
4. Numerical methods for PDE models related to pricing and expected lifetime of an extraction project under uncertainty;Suárez-Taboada;Discrete Contin. Dyn. Syst. Ser. B,2019
5. Second Order Equations with Nonnegative Characterisitc Form;Oleinik,1973