@misc{indiciae5e046de1cfff,
  title = {Solar constant - Constraints on possible variations derived from solar diameter measurements},
  author = {Sofia, S. and Okeefe, J. and Lesh, J. R. and Endal, A. S.},
  year = {1979},
  url = {https://ntrs.nasa.gov/citations/19790055587},
  note = {Source identifier: 19790055587}
}