V. O., Okonkwo, Aginam C. H., and Ezeagu A. C. 2014. “FORMULATION OF THE INTERNAL STRESS EQUATIONS OF PINNED PORTAL FRAMES PUTTING AXIAL DEFORMATION INTO CONSIDERATION”. European Scientific Journal, ESJ 10 (24). https://doi.org/10.19044/esj.2014.v10n24p%p.