TY  - BOOK
AU  - Abhay Ashtekar, Vesselin Petkov
TI  - Springer Handbook of Spacetime
SN  - 9783642419928
PY  - 2014///
PB  - Springer Berlin Heidelberg
KW  - Physics and Astronomy
UR  - https://doi.org/10.1007/978-3-642-41992-8
ER  -