@misc{indiciaede127f2b381e,
  title = {Ca II H(2v) and K(2v) cell grains},
  author = {Rutten, Robert J. and Uitenbroek, Han},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910059826},
  note = {Source identifier: 19910059826}
}