Making Your Design Real: The Form and Behavior Specification
http://www.cooper.com/content/insights/newsletters/2003_01/making_your_design_real.asp

Olshavsky, Ryan
Cooper Interaction Design
2003

Abstract:

Let's say your development organization has embraced design as a key to creating successful products. You've devoted time and energy to creating the perfect, goal-directed design for your product. Your programmers are ready and eager to start putting that design into code. So…now what? How do you communicate your design to your development team, accurately and in sufficient detail? One approach is to produce a Form & Behavior Specification.