My 1989 “boundary objects” paper with Leigh Star is still the most cited paper in Social Studies of Science as of September 15, 2015.
Thanks to Hélène Mialet for pointing this out. I first checked on February 26, 2014, so this paper has been “top of the charts” for over a year.
See this SSS page for the top 50 most cited articles: http://sss.sagepub.com/reports/most-cited
The paper had 4568 citations as of February 26, 2014, according to Google Scholar. It was at 5391 citations as of February 27, 2015. On September 15, 2015, the citation count on Google Scholar is up to 5864, an increase of 473 since the last time I checked. On September 9, 2016, the citation count was up to 6920.
Here’s the reference:
Star, S. L. and J. R. Griesemer. 1989. “Institutional Ecology, ‘Translations,’ and Boundary Objects: Amateurs and Professionals in Berkeley’s Museum of Vertebrate Zoology, 1907 – 1939.” Social Studies of Science 19: 387-420.
You can find a copy at my Box.com publications page: