TY  - JOUR
A1  - Eschenburg, Jost-Hinrich
T1  - Spacetimes with geodesic light rays
T2  - Classical Quantum Gravity
Y1  - 1993
UR  - https://opus.bibliothek.uni-augsburg.de/opus4/frontdoor/index/index/docId/19322
UR  - https://nbn-resolving.org/urn:nbn:de:bvb:384-opus4-193224
VL  - 10
IS  - 10
SP  - 2103
EP  - 2105
PB  - IOP
ER  -