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International Standard ISO/IEC 14143-1
Information technology -- Software measurement -- Functional size measurement
Part 1: Definition of concepts
Years: 1998, 2007.
ISO/IEC 14143-1:2007 defines the concepts of FSM (Functional Size Measurement). The concepts of Functional Size Measurement (FSM) are designed to overcome the limitations of earlier methods of sizing software by shifting the focus away from measuring how the software is implemented to measuring size in terms of the functions required by the user.
Online ISO catalog: