@misc{indiciae22077e6b1bac,
  title = {Computational aspects of maximum likelihood estimation and reduction in sensitivity function calculations},
  author = {Gupta, N. K. and Mehra, R. K.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19750031633},
  note = {Source identifier: 19750031633}
}