@article {n2011comparative,
	title = {Comparative Study of Structural Systems for Tall Buildings},
	journal = {The Journal of American Science},
	volume = {7},
	number = {4},
	year = {2011},
	note = {n/a},
	pages = {707{\textendash}719},
	publisher = {Marsland Press},
	abstract = {n/a},
	author = {N. F. El-Leithy, M. M. Hussein and W. A. Attia}
}
