@misc{indiciae99f28056c792,
  title = {A variable-metric algorithm employing linear and quadratic penalties},
  author = {Kelley, H. J. and Lefton, L. and Johnson, I. L., Jr.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19760028320},
  note = {Source identifier: 19760028320}
}