@article{TranThanhTuanPhamChiVinhOhrnbergeretal.2016,
  author    = {Tran Thanh Tuan and Pham Chi Vinh and Matthias Ohrnberger and Peter Malischewsky and Abdelkrim Aoudia},
  title     = {An Improved Formula of Fundamental Resonance Frequency of a Layered Half-Space Model Used in H/V Ratio Technique},
  journal   = {Pure and applied geophysics},
  volume    = {173},
  pages     = {2803 -- 2812},
  doi       = {10.1007/s00024-016-1313-0},
  year      = {2016},
}