@article{7549,
      author       = "Aardoom, L. and XVIII General Assembly IUGG, Hamburg 1983",
      title        = "Earth Rotation Described by Means of Quaternions. XVIII
                      General Assembly IUGG, Hamburg 1983  ",
      year         = "1983",
      note         = "Liter. - 4 obr., 1 sv.",
}