[REQUEST] Consistent linearization and conservative systems

[sanderos_10]

Hey guys,
anybody out there with a pdf-version of one of those articles?

Consistent linearization in mechanics of solids and structures,
Hughes, T. J. R. and Pister. K. S. (1978),
Computers and Structures 9: 391-397


Conservative systems, potential operators and tangent stiffness: reconsideration and generalization
H. Bufler,
Archive of Applied Mechanics,
1993, Volume 63, Issue 1, pp 51-58

[hich]

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