https://pt.wikipedia.org/wiki/Astrophysics_Data_System#:~:text=Astrophysics%20Data%20System%20%28%20ADS%29%20%C3%A9%20um%20banco,e%20geof%C3%ADsica%2C%20incluindo%20preprints%20do%20sistema%20ArXiv%20.

https://pt.wikipedia.org/wiki/Astrophysics_Data_System#:~:text=Astrophysics%20Data%20System%20%28%20ADS%29%20%C3%A9%20um%20banco,e%20geof%C3%ADsica%2C%20incluindo%20preprints%20do%20sistema%20ArXiv%20.