@article{ceng_petruşel_yao_yao_2019, 
  title={Systems of variational inequalities with hierarchical variational inequality constraints for Lipschitzian pseudocontractions}, 
  volume={20}, 
  DOI={10.24193/fpt-ro.2019.1.07}, 
  publisher={Babes-Bolyai University}, 
  author={Ceng and Petruşel and Yao and Yao}, 
  year={2019}, 
  month={Feb}
  }