1. see for example: ASTM E380 – 76, Standard for Metric Practice, and: DIN 1324 – 88 Elektromagnetisches Feld – Teil 1: Zustandsgrößen (in German).
2. Barkhausen, H. (1919). Zwei mit Hilfe der neuen Verstärker entdeckte Erscheinungen, Physik. Zeitschr. XX, S. 401–403 (in German).
3. Fracto‐emission: The role of charge separation
4. Lenkeyné, Gy. B. and Winkler, S. (1995). On the applicability of the magnetic emission technique for the determination of ductile crack initiation in impact tests, Proceedings of the 7th International Conference on Mechanical Behaviour of Materials, ICM 7, pp. 381–382, The Hague, The Netherlands, May 28–June 2, 1995.