Ligon Duncan and Tim Keller discussed women and the diaconate at the 2009 PCA General Assembly. The audio from that discussion is available below.
Ligon Duncan
Timothy Keller
Dr. Duncan and Dr. Keller also wrote articles about this for By Faith magazine.
Duncan, Ligon. "The Case for Our Current Policy on Female Deacons." By Faith 25 August 2008.
Keller, Tim. "The Case for Commissioning (Not Ordaining) Deaconesses." By Faith 25 August 2008.