[2015-05-20]. OCLC 68692085. (原始内容 (PDF)存档于2011-07-28). 引文格式1维护:显式使用等标签 (link) Cliver, E.W.; L. Svalgaard. The 1859 Solar–Terrestrial Disturbance and the Current
the Tale of How Modern Astronomy Began. 2007. ISBN 978-0-691-12660-9. Cliver, E. W.; Svalgaard, L. The 1859 Solar–Terrestrial Disturbance and the Current