@article{oai:repository.dl.itc.u-tokyo.ac.jp:00040048,
 author = {Tahara, Hidetoshi},
 issue = {1},
 journal = {Journal of mathematical sciences, the University of Tokyo},
 month = {Sep},
 pages = {67--137},
 title = {Gevrey Regularity in Time of Solutions to Nonlinear Partial Differential Equations},
 volume = {18},
 year = {2011}
}