Masako Kishida Philipp Rumschinski Rolf Findeisen Richard D. Braatz Efficient polynomial-time outer bounds on state trajectories for uncertain polynomial systems using skewed structured singular values. 216-221 2011 CACSD https://doi.org/10.1109/CACSD.2011.6044535 conf/cacsd/2011 db/conf/cacsd/cacsd2011.html#KishidaRFB11