@misc{indiciae5763ef15534d,
  title = {Two X-ray-selected BL Lacertae objects observed with the HEAO 1 scanning modulation collimator},
  author = {Remillard, R. A. and Tuohy, I. R. and Brissenden, R. J. V. and Buckley, D. A. H. and Schwartz, D. A.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19900023712},
  note = {Source identifier: 19900023712}
}