”Developing Safety-Critical Systems”   
    Railway Age (2006)  

”Vital – What Does It Really Mean?”
 Railway Systems and Controls (2005)

 
”The Previously Untold Story About Grade Crossing Costs”
Railway Track and Structures (2004)

”Much Ado About Safety”
Railway Age (2003)

”Wayside LED Signals”
 Railway Track and Structures (2002)