TY  - RPRT
TI  - Man-made space debris - Does it restrict free access to space
AU  - Wolfe, M.
AU  - Chobotov, V.
AU  - Kessler, D.
AU  - Reynolds, R.
PY  - 1981
UR  - https://ntrs.nasa.gov/citations/19810063024
ID  - 19810063024
ER  -