Schwenzfeier, K., Erbe, A., Bilotto, P., Lengauer, M., Merola, C., Cheng, H.-W., et al. (2019). Optimizing multiple beam interferometryin the surface forces apparatus: Novel optics,reflection mode modeling, metal layerthicknesses, birefringence, and rotationof anisotropic layers. Review of Scientific Instruments, 90: 043908. doi:10.1063/1.5085210.