@article{papers admin_2022, 
  title={Wave and Signal Technology 3A}, 
  DOI={10.25415/ujhb.19732240.v2}, 
  abstractNote={Exam paper for first semester 2019}, 
  publisher={University of Johannesburg}, 
  author={Papers Admin, UJ Exam}, 
  year={2022}, 
  month={May}
  }