@article{paperid:1020365, author = {Rezaiee Pajand, Mohaamad and -, -}, title = {Elasto-Plastic Analysis of Trusses by Virtual Loads}, journal = {International Journal of Civil Engineering}, year = {2008}, volume = {5}, number = {3}, month = {March}, issn = {1735-0522}, pages = {224--235}, numpages = {11}, keywords = {elasto-plastic; truss; hardening; complementary programming; virtual loads}, }