Leopoldo Jetto Valentina Orsini Raffaele Romagnoli The quadratic stabilization problem for LTV plants with arbitrary mode-switch dynamics and non uniformly bounded parametric uncertainties. 1422-1427 2015 CCA https://doi.org/10.1109/CCA.2015.7320811 conf/IEEEcca/2015 db/conf/IEEEcca/IEEEcca2015.html#JettoOR15