1. Richtig funktionierende Software: Anforderungen und ihre Überprüfung;Greif,2004
2. N. Greif, H. Schrepf, Software requirements for measuring systems — Examples for requirements catalogues, PTB Laboratory Report, PTB-8.31-2000-2, Braunschweig and Berlin, July, 2000.
3. N. Greif, H. Schrepf, D. Richter, Software Evaluation in Calibration Services: Requirements and Testing Procedure, in: D. Richter, V. Granovski (Eds.), Methodological Aspects of Data Processing and Information Systems in Metrology, PTB Report PTB-IT-7, 60–72, ISBN 3-89701-379-7, Braunschweig and Berlin, June, 1999.
4. Software Engineering Related Standards and Guidelines for Metrology;Greif,2000
5. N. Greif, H. Schrepf. Towards Secure Measurements Through Software Analysis, in: D. Richter, V. Granovski (Eds.), Methodological Aspects of Data Processing and Information Systems in Metrology, PTB Report PTB-IT-7, 52–59, ISBN 3-89701-379-7, 1999, June.