TY  - DATA
AU  - Rainer Kayser, Thomas Schramm, Lars Nieser
TI  - Gravitational Lenses
SN  - 9783540472865
PY  - 1992///
PB  - Springer Berlin Heidelberg
KW  - Physics and Astronomy
UR  - https://doi.org/10.1007/3-540-55797-0
ER  -