@article{Hayakawa:6951,
      author        = "Hayakawa, Hisashi and Suyama, Toru and Clette, Frédéric
                       and Bhattacharya, Shreya and Lefèvre, Laure and Ohnishi,
                       Kouji",
      title         = "{Katsue Misawa's sunspot observations in 1921-1934: a
                       primary reference for the Wolfer-Brunner transition}",
      year          = "2023",
}