@article {sadiq2008developing,
	title = {Developing environmental indices using fuzzy numbers ordered weighted averaging (FN-OWA) operators},
	journal = {Stochastic Environmental Research and Risk Assessment},
	volume = {22},
	year = {2008},
	pages = {495{\textendash}505},
	publisher = {Springer},
	author = {Sadiq, Rehan and Tesfamariam, Solomon}
}
