@misc{indiciaeac9f96a118b0, title = {Exponential Convergence in Feedforward Adaptive Systems Without Persistent Excitation}, author = {Bayard, D. S. and Spanos, J. and Rahman, Z.}, year = {1996}, url = {https://ntrs.nasa.gov/citations/20060036024}, note = {Source identifier: 20060036024} }