M. Kumar, A.S. Whittaker, M.C. Constantinou, An ad- vanced numerical model of elastomeric seismic isolation bear- ings, Earthquake Engineering & Structural Dynamics, 43(13) (2014) 1955-1974.
 M. Eröz, R. DesRoches, Bridge seismic response as a func- tion of the Friction Pendulum System (FPS) modeling assump- tions, Engineering Structures, 30(11) (2008) 3204-3212.
 I. Buckle, S. Nagarajaiah, K. Ferrell, Stability of elastomer- ic isolation bearings: Experimental study, Journal of Structural Engineering, 128(1) (2002) 3-11.
 I.G. Buckle, J.M. Kelly, Properties of slender elastomeric isolation bearings during shake table studies of a large-scale model bridge deck, Special Publication, 94 (1986) 247-270.
 I. Buckle, H. Liu, Experimental determination of critical loads of elastomeric isolators at high shear strain, NCEER Bull, 8(3) (1994) 1-5.
 C.G. Koh, J.M. Kelly, Effects of axial load on elastomeric isolation bearings, Earthquake Engineering Research Center, University of California: Berkeley, United States, 1987.
 A. Elgamal, L. He, Vertical earthquake ground motion re- cords: an overview, Journal of Earthquake Engineering, 8(05) (2004) 663-697.
 W. Silva, Characteristics of vertical strong ground motions for applications to engineering design, 1088-3800, 1997.
 M. Eröz, R. DesRoches, A comparative assessment of slid- ing and elastomeric seismic isolation in a typical multi-span bridge, Journal of Earthquake Engineering, 17(5) (2013) 637- 657.
 G.P. Warn, A.S. Whittaker, Vertical earthquake loads on seismic isolation systems in bridges, Journal of structural engi- neering, 134(11) (2008) 1696-1704.
 A. Aviram, K.R. Mackie, B. Stojadinović, Guidelines for nonlinear analysis of bridge structures in California, Pacific Earthquake Engineering Research Center, 2008.
 AASHTO, Guide specifications for seismic isolation de- sign, American Association of State Highway and Transporta- tion Officials, 2010.
 I. Buckle, M. Al-Ani, E. Monzon, Seismic isolation design examples of highway bridges, NCHRP Project, (2011) 20-27.
 American Society of Mechanical Engineers, Guide for verification and validation in computational solid mechanics, 079183042X, ASME, 2006.
 S. Mazzoni, F. McKenna, M.H. Scott, G.L. Fenves, The open system for earthquake engineering simulation (Open- SEES) user command-language manual, (2006).
 G.P. Warn, A.S. Whittaker, A study of the coupled hori- zontal-vertical behavior of elastomeric and lead-rubber seismic isolation bearings, (2006).
 G.P. Warn, A.S. Whittaker, M.C. Constantinou, Vertical stiffness of elastomeric and lead–rubber seismic isolation bear- ings, Journal of Structural Engineering, 133(9) (2007) 1227- 1236.
 A. Mokha, M. Constantinou, A. Reinhorn, Teflon bearings in base isolation I: Testing, Journal of Structural Engineering, 116(2) (1990) 438-454.
 M. Constantinou, A. Mokha, A. Reinhorn, Teflon bearings in base isolation II: Modeling, Journal of Structural Engineer- ing, 116(2) (1990) 455-474.
 H. Ounis, A. Ounis, Effect Of The Damping Of The LRB System On The Dynamic Response Of A Base Isolated Build- ing, in: Turkish Conference on Earthquake Engineering and Seismology–TDMSK, Antakya, Hatay/Turkey, 2013.
 T.A. Morgan, The use of innovative base isolation systems to achieve complex seismic performance objectives, Univer- sity of California, Berkeley, 2007.