@article{33330,
      author       = "Burša, Milan and XIV. Val. shromáždění MUGG, Lucerne,
                      25. 9. - 7. 10. 1967",
      title        = "Theoretical and Practical Achievements in Determining the
                      Figure of the Earth and its External Gravitational Field
                      1963 - 1967  ",
      year         = "1967",
      note         = "1 brož.",
}