ご利用の際には以下の文献を参照願います:
International Geomagnetic Reference Field: the 12th generation, Erwan Thebault, Christopher C Finlay, Ciaran D Beggan, Patrick Alken, Julien Aubert, Olivier Barrois, Francois Bertrand, Tatiana Bondar, Axel Boness, Laura Brocco, Elisabeth Canet, Aude Chambodut, Arnaud Chulliat, Pierdavide Coisson, Francois Civet, Aimin Du, Alexandre Fournier, Isabelle Fratter, Nicolas Gillet, Brian Hamilton, Mohamed Hamoudi, Gauthier Hulot, Thomas Jager, Monika Korte, Weijia Kuang, Xavier Lalanne, Benoit Langlais, Jean-Michel Leger, Vincent Lesur, Frank J Lowes et al. Earth, Planets and Space 2015, 67:79 (27 May 2015)

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