@article{Zheng2006,
	title = {A robust estimate of the correlation coefficient for bivariate normal
	distribution using ranked set sampling},
	author = {Gang Zheng and Reza Modarres},
	day = {01},
	journal = {Journal of Statistical Planning and Inference},
	month = {Jan},
	number = {1},
	pages = {298--309},
	url = {http://www.sciencedirect.com/science/article/B6V0M-4CXRYSW-B/1/0cba9b32bc72461925be7f09b86c7fa7},
	volume = {136},
	year = {2006},
	biburl = {http://www.bibsonomy.org/bibtex/27a8e504ed09293468881b10dbf03f34d/smicha},
	keywords = {Modified estimation likelihood maximum }
}