https://www.hq.nasa.gov/alsj/LRV_OpsNAS8-25145.pdf
http://web.archive.org/web/20060317172527/http://www.btinternet.com/~ursine/LMhandbook.pdf
https://www.ibiblio.org/apollo/Documents/SM2A-03-SC012-ApolloOperationsHandbook-Spacecraft012.pdf
http://www.lpi.usra.edu/lunar/documents/NASA%20TM-X-69516.pdf
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