[ 1 ] Davis LA. First stage recovery. Engineering 2016;2(2):152–3. 链接1

[ 2 ] Malik T. Success! SpaceX launches Falcon Heavy rocket on historic maiden voyage [Internet]. New York: Purch Group, Inc.; c2018 [updated 2018 Feb 6; cited 2018 Apr 3]. Available from: https://www.space.com/39607-spacex- falcon-heavy-first-test-flight-launch.html.

[ 3 ] Malik T. Elon Musk explains why SpaceX’s Falcon Heavy core booster crashed [Internet]. New York: Purch Group, Inc.; c2018 [updated 2018 Feb 14; cited 2018 Apr 3]. Available from: https://www.space.com/39690-elon-musk- explains-falcon-heavy-core-booster-crash.html.

[ 4 ] Grush L. SpaceX launches its powerful Falcon Heavy rocket for the first time [Internet]. New York: Vox Media, Inc.; c2018 [updated 2018 Feb 6; cited 2018 Apr 3]. Available from: https://www.theverge.com/2018/2/6/16971200/spacex- falcon-heavy-launch-success-roadster-orbit-elon-musk.

[ 5 ] Falcon Heavy test launch [Internet]. Hawthorne: Space Exploration Technologies Corporation; c2017 [updated 2018 Feb 7; cited 2018 Apr 3]. Available from: http://www.spacex.com/news/2018/02/07/falcon-heavy-test- launch.