@article{01370648, title = {An abstract setting for differential Riccati equations in optimal control problems for hyperbolic/Petrowski-type P. D. E. s with boundary control and slightly smoothing observation.}, journal = {Abstract and Applied Analysis}, volume = {1}, year = {1996}, pages = {435-484}, doi = {10.1155/S1085337596000243}, zbl = {0940.49005}, language = {en}, url = {http://dml.mathdoc.fr/item/01370648} }
Triggiani, R. An abstract setting for differential Riccati equations in optimal control problems for hyperbolic/Petrowski-type P. D. E. s with boundary control and slightly smoothing observation.. Abstract and Applied Analysis, Tome 1 (1996) pp. 435-484. doi : 10.1155/S1085337596000243. http://gdmltest.u-ga.fr/item/01370648/