TY - JOUR A1 - Dzhunushaliev, Vladimir A1 - Schmidt, Hans-Jürgen T1 - 2+2-decomposable solutions of weyl gravity BT - Zwei plus zwei-decomposable solutions of wey gravity Y1 - 1999 ER - TY - JOUR A1 - Schmidt, Hans-Jürgen T1 - 2-dimensional representations of 4-dimensional gravitational waves Y1 - 1998 ER - TY - JOUR A1 - Dzhunushaliev, Vladimir A1 - Schmidt, Hans-Jürgen T1 - 4D wormhole with signature change in the presence of extra dimensions BT - VierD wormhole with signature change in the presence of extra dimensions JF - General relativity and quantum cosmology : preprints gr-qc Y1 - 1999 UR - http://xxx.soton.ac.uk/form/gr-qc? VL - 9908076 ER - TY - JOUR A1 - Schmidt, Hans-Jürgen T1 - A new duality transformation for fouth-order gravity Y1 - 1997 ER - TY - JOUR A1 - Schmidt, Hans-Jürgen T1 - A new proof of Birkhoffïs theorem Y1 - 1997 ER - TY - JOUR A1 - Schmidt, Hans-Jürgen T1 - A two-dimensional representation of four-dimensional graviational waves Y1 - 1998 ER - TY - JOUR A1 - Schmidt, Hans-Jürgen T1 - Allgemeine Relativitätstheorie Y1 - 2000 ER - TY - BOOK A1 - Schmidt, Hans-Jürgen T1 - An alternate Hamiltonian formulation of fourth-order theories Y1 - 1995 CY - Potsdam ER - TY - BOOK A1 - Schmidt, Hans-Jürgen T1 - An alternate Hamiltonian formulation of fourth-order theories T3 - Preprint / Universität Potsdam, Institut für Mathematik Y1 - 1994 VL - 1994, 12 PB - Univ. CY - Potsdam ER - TY - JOUR A1 - Schmidt, Hans-Jürgen T1 - Aufgaben zur Kosmologie Y1 - 1994 ER -