@misc{indiciaecbc95b2b5c7e,
  title = {Improved Bipolar Separator For Lead Acid Batteries},
  author = {Rippel, Wally E. and Edwards, Dean B.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890000011},
  note = {Source identifier: 19890000011}
}