Defining, Formulating and Modeling Product Functions in the Early Phase in the Model of PGE - Product Generation Engineering. - Albert Albers; Joshua Fahl; Tobias Hirschter; Steffen Haag; Sebastian Hünemeyer; Tim Staiger (ISSE, 2020)

Functions in the Early Phase of Product Development: A Systematic Literature Review. - Joshua Fahl; Tobias Hirschter; Steffen Haag; Tim Staiger; Albert Albers (ISSE, 2020)