Stephen F. May May, S. F., & Smith, R. C. (2010). Proper Orthogonal Decomposition with Updates for Efficient Control Design in Smart Material Systems. BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL MATERIALS AND COMPOSITES 2010, Vol. 7644. https://doi.org/10.1117/12.847579 Crannell, A., May, S., & Hilbert, L. (2007). Shifts of finite type and Fibonacci Harps. APPLIED MATHEMATICS LETTERS, 20(2), 138–141. https://doi.org/10.1016/j.aml.2006.03.007