@misc{indiciaee402b66da8f7,
  title = {Electron concentration in the outer ionosphere according to observation data provided by sputnik delta 2 1958 kontsentratsiya elektronov vo vneshney ionosfere po nablyudeniyam za tret'yim sovetskim sputnikom},
  author = {Klinker, P. and Knut, R. and Shmelovskiy, K. KH.},
  year = {1963},
  url = {https://ntrs.nasa.gov/citations/19660083587},
  note = {Source identifier: 19660083587}
}