@misc{indiciae832129c68317,
  title = {INTEGRAL core programme},
  author = {Gehrels, N. and Schoenfelder, V. and Ubertini, P. and Winkler, C.},
  year = {1997},
  url = {https://ntrs.nasa.gov/citations/19970025852},
  note = {Source identifier: 19970025852}
}