TY  - DATA
AU  - W. Klingenberg
TI  - Lectures on Closed Geodesics
SN  - 9783642618819
PY  - 1978///
PB  - Springer Berlin Heidelberg
KW  - Mathematics and Statistics
UR  - https://doi.org/10.1007/978-3-642-61881-9
ER  -