Cappiello, Marco Fourier integral operators of infinite order and applications to SG-hyperbolic equations. (English) Zbl 1079.35108 Tsukuba J. Math. 28, No. 2, 311-361 (2004). MSC: 35S30 35L30 35A17 PDFBibTeX XMLCite \textit{M. Cappiello}, Tsukuba J. Math. 28, No. 2, 311--361 (2004; Zbl 1079.35108) Full Text: DOI
Yuzawa, Yasuo Propagation of analyticity of solutions to the Cauchy problem for weakly hyperbolic semi-linear equations. (English) Zbl 1018.35003 Tsukuba J. Math. 25, No. 2, 321-335 (2001). Reviewer: Petar Popivanov (Sofia) MSC: 35A21 35L30 35L75 PDFBibTeX XMLCite \textit{Y. Yuzawa}, Tsukuba J. Math. 25, No. 2, 321--335 (2001; Zbl 1018.35003) Full Text: DOI
Wakabayashi, Seiichiro Propagation of singularities for hyperbolic operators with constant coefficient principal part. (English) Zbl 0411.35019 Tsukuba J. Math. 2, 91-107 (1978). MSC: 35E05 35A08 35L05 PDFBibTeX XMLCite \textit{S. Wakabayashi}, Tsukuba J. Math. 2, 91--107 (1978; Zbl 0411.35019) Full Text: DOI