Yu. V. Barkin, J. M. Ferrándiz and Juan F. Navarro, 'Terrestrial tidal variations in the selenopotential coefficients,' Astronomical and Astrophysical Transactions, Volume 24, Number 3 / June 2005, pp. 215 - 236.) [1]Արխիվացված 2021-02-21 Wayback Machine
Ivankov, A. «Luna 16». National Space Science Data Center Catalog. NASA. Վերցված է 13 October 2018-ին. «The drill was deployed and penetrated to a depth of 35 cm before encountering hard rock or large fragments of rock. The column of regolith in the drill tube was then transferred to the soil sample container... the hermetically sealed soil sample container, lifted off from the Moon carrying 101 grams of collected material»
Ivankov, A. «Luna 20». National Space Science Data Center Catalog. NASA. Վերցված է 13 October 2018-ին. «Luna 20 was launched from the lunar surface on 22 February 1972 carrying 30 grams of collected lunar samples in a sealed capsule»
Ivankov, A. «Luna 24». National Space Science Data Center Catalog. NASA. Վերցված է 13 October 2018-ին. «the mission successfully collected 170.1 grams of lunar samples and deposited them into a collection capsule»
«Apollo 17 troctolite 76535». NASA/Johnson Space Center photograph S73-19456. Curation and Analysis Planning Team for Extraterrestrial Materials (CAPTEM). Վերցված է 2006-11-21-ին.
Yu. V. Barkin, J. M. Ferrándiz and Juan F. Navarro, 'Terrestrial tidal variations in the selenopotential coefficients,' Astronomical and Astrophysical Transactions, Volume 24, Number 3 / June 2005, pp. 215 - 236.) [1]Արխիվացված 2021-02-21 Wayback Machine