Li, L., Chew, Z., & Lijie, L. (2010). Design and characterisation of a piezoelectric scavenging device with multiple resonant frequencies. Sensors and Actuators A: Physical, 162(1), pp. 82-92. doi:10.1016/j.sna.2010.06.017

Li, Lijie, Zhengjun Chew, and Li Lijie. "Design and Characterisation of a Piezoelectric Scavenging Device With Multiple Resonant Frequencies." Sensors and Actuators A: Physical 162, no. 1 (2010): 82-92.

Li, Lijie, Zhengjun Chew, and Li Lijie. "Design and Characterisation of a Piezoelectric Scavenging Device With Multiple Resonant Frequencies." Sensors and Actuators A: Physical 162.1 (2010): 82-92.