1. Abrahamson NA, Litehiser JJ (1989) Attenuation of vertical peak accelerations. BSSA 79:549–580
2. Archuleta RJ (1986) Downhole recordings of seismic radiation, in Earthquake Source Mechanics, Geophysical Monography 37. American Geophysical Union, Washington, D.C.
3. Bard PY, Tucker BE (1985) Underground and ridge site effects: a comparison of observation and theory. BSSA 75:905–922
4. Bozorgnia Y, Abrahamson NA, Al Atik L, Ancheta TD, Atkinson GM, Baker JW, Baltay A, Boore DM, Campbell KW, Chiou BS-J, Darragh R, Day S, Donahue J, Graves RW, Gregor N, Hanks T, Idriss IM, Kamai R, Kishida T, Kottke A, Mahin SA, Rezaeian S, Rowshandel B, Seyhan E, Shahi S, Shantz T, Silva W, Spudich P, Stewart JP, Watson-Lamprey J, Wooddell K, Youngs R (2014) NGA-West2 research project. Earthq Spectra 30:973–987
5. Brune JN (1970) Tectonic stress and spectra of seismic shear waves from earthquakes. J Geophys Res 75:4997–5009