TY  - RPRT
TI  - Physical associations between quasi-stellar objects and galaxies.
AU  - Burbidge, G. R.
AU  - O'Dell, S. L.
AU  - Strittmatter, P. A.
PY  - 1972
UR  - https://ntrs.nasa.gov/citations/19720053561
ID  - 19720053561
ER  -