1. Automatic tuning of simple regulators with specifications on phase and amplitude margins;Åström;Automatica,1984
2. Åström, K.J. and Wittenmark B. (1995). Adaptive Control. Addison-Wesley Publishing Company, Boston.
3. Relay-based estimation of multiple points on process frequency response;Bi;Automatica,1997
4. Hofreiter, M. (2015). Plant identification from relay feedback and anisochronic controller design. Proc. of CSCC’15, Zakynthos Island, pp. 271-275.
5. Tsypkin, Ya. Z. (1974). Releinye atomaticheskie sistemy. Nauka Publishing House, Moscow.