The NASA Astrophysics Data System Abstract Service has become a key component of
astronomical research. It provides bibliographic information daily, or near daily, to a majority of …

The existing search tools for exploring the NASA Astrophysics Data System (ADS) can be
quite rich and empowering (eg, similar and trending operators), but researchers are not yet …

Are the e‐prints (electronic preprints) from the arXiv repository being used instead of journal
articles? We show that the e‐prints have not undermined the usage of journal papers from …

The ADS Abstract and Article Services provide access to the astronomical literature through
the World Wide Web (WWW). The forms based user interface provides access to …

Since its inception in 1993, the ADS Abstract Service has become an indispensable research
tool for astronomers and astrophysicists worldwide. In those seven years, much effort has …

The powerful discovery capabilities available in the ADS bibliographic services are possible
thanks to the design of a flexible search and retrieval system based on a relational …

Four years after the last LISA meeting, the NASA Astrophysics Data System (ADS) finds
itself in the middle of major changes to the infrastructure and contents of its database. In this …

In this paper we present a number of metrics for usage of the SAO/NASA Astrophysics Data
System (ADS). Since the ADS is used by the entire astronomical community, these are …

Second order relational operators are functions which take lists which have been generated
by a database query, and from those lists form sets of other lists, which can then be merged …

The NAËA Astrophysics Data Ëystem (ADË), along with astronomy's journals and data
centers, has developed a distributed on-line digital library which has become the dominant …