PEREIRA, Hélder F. S. G.; JESUS, Abílio M.P. de; RIBEIRO, Alfredo S.  and  FERNANDES, António A.. Influence of loading sequence and stress ratio on Fatigue damage accumulation of a structural component. C.Tecn. Mat. [online]. 2008, vol.20, n.1-2, pp.60-67. ISSN 0870-8312.