I want to ask if anyone knows where can I find to buy this document:
Correia A.A., Virtuoso F.B.E.  "Nonlinear Analysis of Space Frames,"
which is a background document for including geometrical nonlinearities in Seismostruct.
I must say here, that I made an order on Springer.com, but for 24.95eur they only give a download link for an one page abstract, although on their site page it clearly writes that it is a whole chapter-work paper....
Also, I am planing to contact the authors to regret about this "censored"...
Thank you very much!