[REQUEST] Papers

[Songoku]

Dear colleagues,
Can someone help me getting the following papers:

Buckling of stepped crane columns
D.J. Fraser, R.Q. Bridge

Buckling length of non-uniform members under stepped axial loads
John Ch. Ermopoulos

Stability criteria for Timoshenko columns with intermediate and end concentrated axial loads
C.M. Wanga, , K.H. Nga, S. Kitipornchai

Thanks in advance

[ssobhan]

Dedicated to Songoku

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