@article{RLIN_1998_9_9_4_a2,
     author = {Cl\'ement, Philippe and Guerre-Delabri\`ere, Sylvie},
     title = {On the regularity of abstract {Cauchy} problems and boundary value problems},
     journal = {Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni},
     pages = {245--266},
     publisher = {mathdoc},
     volume = {Ser. 9, 9},
     number = {4},
     year = {1998},
     zbl = {0928.34042},
     mrnumber = {727340},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RLIN_1998_9_9_4_a2/}
}