Astrophysics Data System (ADS)
a digital library portal for researchers in astronomy and physics, operated by the Smithsonian Astrophysical Observatory (SAO) under a NASA grant.
a database containg articles waiting to be published.
ISI Web of knowledge - Web of science
an academic citation indexing and search service. Its coverage encompasses the sciences, social sciences, arts and humanities.
Saints and Sinners in the Sky
Mendillo, Michael (Springer International Publishing AG, 2022)Series: Springer Praxis Bks.E-book activated 21 May.
Das Kalenderhandbuch von 354 : Der Chronograph des Filocalus, Teil II
(Holzhausen, 2014)E-book activated 10 May.
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