Morawetz, K. Max Planck Institute for the Physics of Complex Systems, Max Planck Society;
Morawetz, K., March, N., & Squire, R. (2008). The chemical potential for the inhomogeneous electron liquid in terms of its kinetic and potential parts with special consideration of the surface potential step and BCS-BEC crossover. Physics Letters A, 372, 1707-1711. doi:0375-9601.