TY  - RPRT
TI  - X-ray spectroscopy of five BL Lacertae objects
AU  - Urry, C. M.
AU  - Mushotzky, R. F.
AU  - Holt, S. S.
PY  - 1986
UR  - https://ntrs.nasa.gov/citations/19860055345
ID  - 19860055345
ER  -