Boris Kapitonov Bernadette Miara G. Perla Menzala Boundary Observation and Exact Control of a Quasi-electrostatic Piezoelectric System in Multilayered Media. 1080-1097 2007 46 SIAM J. Control. Optim. 3 https://doi.org/10.1137/050629884 https://www.wikidata.org/entity/Q126218489 db/journals/siamco/siamco46.html#KapitonovMM07