@article{christensen_rindel_2006, 
  title={A transparency model and its applications for simulation of reflector arrays and sound transmission}, 
  volume={120}, 
  DOI={10.1121/1.4786982}, 
  publisher={Acoustical Society of America (ASA)}, 
  author={Christensen and Rindel}, 
  year={2006}
  }