@misc{indiciaea190093ae2dd,
  title = {The sun and its activity.},
  author = {M Akioka},
  year = {2002},
  doi = {10.1016/s0753-3322(02)00298-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/12653176/},
  note = {Source identifier: 12653176}
}