@article{leung_wang_ho_leunga_wong_2021, 
  title={All frequency Direct Illumination using Visibility Correspondence generated with Spherical Voronoi Diagrams}, 
  DOI={10.1109/access.2021.3084611}, 
  publisher={Institute of Electrical and Electronics Engineers (IEEE)}, 
  author={Leung, Ho Chun and Wang, Zhenni and Ho, Tze Yui and Leunga, Chi Sing and Wong, Eric W. M.}, 
  year={2021}
  }