This graph is not updating. If you need current information (especially from 2008 – present), please contact the Observatory Librarian at email@example.com
NRAO publication statistics are taken from the NRAO publications bibliography (NRAOPapers), a database of refereed and non-refereed papers using NRAO telescope data or with NRAO staff members as authors. NRAOPapers is populated and maintained by the NRAO Library, with new papers added to the database according to a standard methodology.
Bibliometrics can be interesting and, sometimes, enlightening. They can, if all citing information is available (which does not exist presently – see below), measure productivity and impact for an individual or an observatory.
The bibliometrics shown below are derived from a single source (ADS) and, while ADS is an excellent source for astronomy publications, it is not acceptable for engineering or chemistry. Unfortunately, there is no comprehensive source for citations (whether citation count, H-Index, G-Index or a combination); each has its own strengths and weaknesses. Some citation sources cover only English-language journals while others cover more international journals but only those that have the largest subscription base. Some sources only use refereed sources while others use any source for citation counts, and some providers of citation information will not provide any information on what their citation rates entail.
Bibliometrics can be used for comparisons or trends, but this must be done with the understanding that there is no source (whether single or a combination of all available citation sources) that will provide a scientific measure, thus should be used with extreme caution.