Michael Jackson has worked in computer software since 1961, focusing first on program and system design method, and then on requirements, specifications and architecture for telecommunication and other systems. More recent work on problem structure, analysis and solution, is described in his books Software Requirements & Specifications (http://www.amazon.com/Software-Requirements-Specifications-Principles-Prejudices/dp/0201877120?ie=UTF8&s=books&qid=1215340727&sr=8-2) (1995) and Problem Frames (http://www.amazon.com/Problem-Frames-Analysing-Structuring-Development/dp/020159627X?ie=UTF8&s=books&qid=1215340727&sr=8-1) (2001). Michael Jackson's Academic Profile (http://mcs.open.ac.uk/mj665/)