@article{el-moniem_azazi_mahmoud_2013, 
  title={A single-stage voltage sensorless power factor correction converter for LED lamp driver}, 
  volume={52}, 
  DOI={10.1016/j.aej.2013.07.002}, 
  publisher={Elsevier BV}, 
  author={El-Moniem and Azazi and Mahmoud}, 
  year={2013}
  }