Building Operating Management, Apr. 2014, by Rita Tatum.
http://www.facilitiesnet.com/lighting/article/Use-Ongoing-Monitoring-To-Get-The-Most-Out-Of-Daylighting--14866?source=FeaturedBOM-04/2014

A 3-part article:
Part 1: Use Ongoing Monitoring To Get The Most Out Of Daylighting
Part 2: Controls Are Critical To Daylighting Energy Savings
Part 3: Keep Need For Future Changes In Mind When Setting Up Daylighting Systems