@article{JEDP_2012____A11_0, author = {Gunther Uhlmann}, title = {Inverse {Problems:} {Visibility} and {Invisibility}}, journal = {Journ\'ees \'equations aux d\'eriv\'ees partielles}, eid = {11}, publisher = {Groupement de recherche 2434 du CNRS}, year = {2012}, doi = {10.5802/jedp.94}, language = {en}, url = {https://jedp.centre-mersenne.org/articles/10.5802/jedp.94/} }