TY  - BOOK
AU  - Li, Hengnian
TI  - Geostationary satellites collocation
SN  - 9783642407987
U1  - 629.434 
PY  - 2014///
CY  - Berlin
PB  - Springer
KW  - Geostationary satellites
KW  - Geostationary satellites -- Spacing
ER  -