@misc{indiciae91c2e7addfe7,
  title = {Mass quantity gauging by RF mode analysis},
  author = {Collier, R. S. and Ellerbruch, D. and Cruz, J. E. and Stokes, R. W. and Luft, P. E. and Peterson, R. G. and Hiester, A. E.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730018663},
  note = {Source identifier: 19730018663}
}