@article{RLIN_1991_9_2_4_a4,
     author = {Triggiani, Roberto},
     title = {Regularity of wave and plate equations with interior point control},
     journal = {Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni},
     pages = {307--315},
     publisher = {mathdoc},
     volume = {Ser. 9, 2},
     number = {4},
     year = {1991},
     zbl = {0756.93034},
     mrnumber = {931277},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RLIN_1991_9_2_4_a4/}
}