@inbook{8786,
  author = {C. Schrijver and J. Cote},
  title = {The relation between the CA II K line-core flux density and the magnetic flux density on the sun},
  year = {1987},
  volume = {291},
  number = {Lecture Notes in Physics},
  pages = {51-53},
  publisher = {Springer Berlin Heidelberg},
  address = {Berlin, Heidelberg},
  isbn = {978-3-540-18653-3},
  doi = {10.1007/3-540-18653-0_106},
}