@article{oai:tsukuba.repo.nii.ac.jp:00017560,
 author = {Cicognani, Massimo},
 issue = {1},
 journal = {Tsukuba Journal of Mathematics},
 month = {Jun},
 pages = {1--12},
 title = {The Cauchy Problem for Strictly Hyperbolic Operators with Non-Absolutely Continuous Coefficients},
 volume = {27},
 year = {2003}
}