David J. Clements, Harald K. Wimmer. Existence and uniqueness of unmixed solutions of the discrete-time algebraic Riccati equation. Systems & Control Letters, 50(5):343-346, 2003. [doi]
@article{ClementsW03,
title = {Existence and uniqueness of unmixed solutions of the discrete-time algebraic Riccati equation},
author = {David J. Clements and Harald K. Wimmer},
year = {2003},
doi = {10.1016/S0167-6911(03)00180-4},
url = {http://dx.doi.org/10.1016/S0167-6911(03)00180-4},
researchr = {https://researchr.org/publication/ClementsW03},
cites = {0},
citedby = {0},
journal = {Systems & Control Letters},
volume = {50},
number = {5},
pages = {343-346},
}