المؤلفون: CONNELL, KEVIN, CLANCY, JENNIFER, REGLI, STIG, MESSNER, MIKE, RODGERS, CRYSTAL, FRICKER, COLIN, TELLIARD, WILLIAM A.

المصدر: Journal (American Water Works Association), 2001 Mar 01. 93(3), 106-109.

الوصول الحر: https://www.jstor.org/stable/41297884Test

المؤلفون: Clancy, Jennifer L., Bukhari, Zia, McCuin, Randi M., Matheson, Zoë, Fricker, Colin R.

المصدر: Journal (American Water Works Association), 1999 Sep 01. 91(9), 60-68.

الوصول الحر: https://www.jstor.org/stable/41296763Test