Author | Title | Page |

| Scattering for Nonlinear Symmetric Hyperbolic Systems | 285 |

Takaaki Ohkubo and Kunio Sakamoto | CR Einstein-Weyl structures | 309 |

Takao Hayami | On Hochschld cohomology ring of the integral group ring of the quaternion group | 363 |

Alina Iacob | Generalized Tate cohomology | 389 |

Yuki Haraguchi | On Non-commutative extensions of Ga by Gm over an Fp-Algebra | 405 |

Yasuhiro Niitsuma | On the extensions of Wn by G over an Zp-Algebra | 437 |

Jin-ichi Itoh and Fumiko Ohtsuka | Total curvature of noncompact piecewise Riemannian 2-Polyhedra | 471 |

Mukut Mani Tripathi, Tooru Sasahara and Jeong-Sik Kim | On invariant submanifolds of contact metric manifolds | 495 |

U-Hang Ki and Setsuo Nagai | Real hypersurfaces of a nonflat complex space form in terms of the Ricci tensor | 511 |

Aleksander Grytczuk and Barbara Medryk | On a result of Flammenkamp-Luca concerning noncototient sequence | 533 |

Takashi OKAYASU | A Gap theorem for complete four-dimensional manifolds with dW+ = 0 | 539 |