@misc{indiciae8daa51f39879,
  title = {A Balanced Diaphragm Type of Maximum Cylinder Pressure Indicator},
  author = {Spanogle, J A and Collins, John H , Jr},
  year = {1930},
  url = {https://ntrs.nasa.gov/citations/19930081129},
  note = {Source identifier: 19930081129}
}