@article{kwak_kim_han_2018, 
  title={Proximity Analysis of Web-Based Auditory Training Programs: Toward Listening and Customized Learning Exercises for Aural Rehabilitation}, 
  volume={61}, 
  DOI={10.3342/kjorl-hns.2018.00094}, 
  publisher={Korean Society of Otorhinolaryngology-Head and Neck Surgery}, 
  author={Kwak and Kim and Han}, 
  year={2018}, 
  month={Apr}
  }