Bibliography
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1. ARMSTRONG, P.J. & FREDERICK, C.O.: A Mathematical Representation of the Multiaxial Bauschinger Effect. G.E.G.B.; Report RD/B/N, 731, 1966.


2. BERTERO V.V.: Seismic behavior of structural concrete linear elements (beams and columns) and their connections. *Euro-International Concrete Committee (CEB)*; Newsletter No. 131; Paris, France, 1979.


3. ELIGEHAUSEN R., POPOV E.P. & BERTERO V.V.: Local bond stress-slip relationships of deformed bars under generalised excitations. *University of California; Report no. UCB/EERC ‑83/23 of the National Science Foundation*, 1983.


4. ORTIZ M. & SIMO J.C.: An analysis of a new class of integration algorithms for elastoplastic constitutive relationships. *International Journal for Numerical Methods in Engineering*; Vol. 23, pp.353—366, 1986.