@misc{indiciae560a1e0bd68a,
  title = {Digi Island: A Serious Game for Teaching and Learning Digital Circuit Optimization},
  author = {Harper, Michael and Miller, Joseph and Shen, Yuzhong},
  year = {2011},
  url = {https://ntrs.nasa.gov/citations/20110012070},
  note = {Source identifier: 20110012070}
}