@misc{indiciaecaba1e06969a,
  title = {New Jacobi-type necessary and sufficient conditions for singular optimization problems},
  author = {Mcdanell, J. P. and Powers, W. F.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700057215},
  note = {Source identifier: 19700057215}
}