Abdellah Benzaouia Abdelaziz Hmamed Fernando Tadeo Stability conditions for discrete 2D switching systems, based on a multiple Lyapunov function. 2706-2710 2009 ECC https://doi.org/10.23919/ECC.2009.7074815 conf/eucc/2009 db/conf/eucc/eucc2009.html#BenzaouiaHT09