TY  - RPRT
TI  - Ion-beam sputtering increases solar-cell efficiency
AU  - Burk, D. E.
AU  - Dubow, J. B.
AU  - Sites, R. R.
PY  - 1977
UR  - https://ntrs.nasa.gov/citations/19770000319
ID  - 19770000319
ER  -