Here's why toilet flush has one large and one small button | The Times of India
Problems With Dual Flush Toilets - Dual Flush Toilet Problems
American Standard Clean White Dual Flush Elongated Chair Height 2-piece WaterSense Soft Close Toilet 12-in Rough-In 1.6-GPF in the Toilets department at Lowes.com
Dual-flush toilets are wasting more water than they save, says U.K. water utility | CBC Radio
Dual-Flush Toilets Shouldn't Be a Crapshoot | BuildingGreen