@article {140762,
	title = {Behavior of concrete-filled double skin steel tube beam-columns},
	journal = {Steel and Composite Structures, an International Journal},
	volume = {22},
	year = {2016},
	pages = {1141-1162},
	author = {M. Moddather Hassan and A. Ashraf Mahmoud and M. Hassanien Serror}
}
