author = { Jiang, Yaotiao AND Xu, Zhentao },

title = { On the Sp�rer Minimum },

publisher = {Springer Science and Business Media LLC},

isbn = {0004-640X},

isbn = {1572-946X},

keywords = { Space and Planetary Science , Astronomy and Astrophysics },

year = {1986},

url = { http://slubdd.de/katalog?TN_libero_mab2 }