Francesco G. Dell'anna, Tao Dong, Ping Li, Yumei Wen, Zhaochu Yang, Mario R. Casu, Mehdi Azadmehr, Yngvar Berg (2018) State-of-the-Art Power Management Circuits for Piezoelectric Energy Harvesters, In: IEEE CIRCUITS AND SYSTEMS MAGAZINE, pp. 27-48, ISSN: 1531-636X