@book{ BA75070770, author = "Fulchignoni, Marcello and COSPAR", title = "Planetary studies : proceedings of Symposium 4 and the Topical Meeting of the COSPAR Interdisciplinary Scientific Commission B (Meetings B7 and B8) of the COSPAR Twenty-eighth Plenary Meeting held in the Hague, the Netherlands, 25 June- 6 July 1990", publisher = "Published for The Committee on Space Research by Pergamon", year = "1992", series = "Advances in space research", number = "v. 12, no. 11", URL = "https://ci.nii.ac.jp/ncid/BA75070770" }