An irreversible investment problem with demand on a finite horizon: The optimal investment boundary analysis. - Xiaoru Han; Fahuai Yi (Commun. Nonlinear Sci. Numer. Simul., 2022)

A Reversible Investment Problem with Capacity and Demand in Finite Horizon: Free Boundary Analysis. - Xiaoru Han; Fahuai Yi; Jianbo Zhang (SIAM J. Control. Optim., 2024)