Domenico D'Alessandro Raffaele Romano Indirect controllability and indirect observability of quantum mechanical systems. 3030-3037 2012 CDC https://doi.org/10.1109/CDC.2012.6426513 https://www.wikidata.org/entity/Q58784127 conf/cdc/2012 db/conf/cdc/cdc2012.html#DAlessandroR12