@article{10_4064_sm189_3_1,
     author = {Charles J. K. Batty and Ralph Chill and Sachi Srivastava},
     title = {Maximal regularity for
 second order non-autonomous {Cauchy} problems},
     journal = {Studia Mathematica},
     pages = {205--223},
     publisher = {mathdoc},
     volume = {189},
     number = {3},
     year = {2008},
     doi = {10.4064/sm189-3-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm189-3-1/}
}