I ran across these while searching for information about speed ovens (!), but they look like really good comprehensive articles.

Here is the LED article. The main one on under cabinet lighting is listed below.

Volume 2, Issue 2: How to Select Residential LED Under-cabinet Lighting

http://www.lrc.rpi.edu/programs/solidstate/assist/pdf/undercabinet2.pdf

Here is a link that might be useful: Volume 2, Issue 1: A Homeowner's Guide to Residential Under-cabinet Lighting: Getting Good Lighting for Your Kitchen Counters