The database Publish or Perish which is free for downloading from the Web is based on Google Scholar's data. In this database here are several sorting features. You may try it..
Please refer the attachments. Google scholar is yet to include this feature in the search. However, one can sort the publications by number of citations inside a researchers profile in Google scholar. Sorting search results by citations is already available in Scopus.
"Sort by by date" lets you can see the newest papers first, so that you can trace the tree of references backwards in time or by relevance and not miss any.
"Sort by relevance" takes primarily into account the proportion of times that your search words occur in each paper. So theoretically, the first papers presented should be the most important to YOU. It is also secondarily sorted according citation counts. However, the number of citations that each paper has attracted is an "old-fashioned blunt weapon" to find important papers to the GENERAL COMMUNITY which is still beloved by lazy database programmers, and university bean-counters.
Google has no intentions of out-Scopussing Scopus, so do not hold your breath waiting!
If you really want to study citation counts, then I suggest that you use some free software to sort on your harddrive.
The database Publish or Perish which is free for downloading from the Web is based on Google Scholar's data. In this database here are several sorting features. You may try it..
Publish or Perish, of Ann Will Harzings, is a Windows os-based application and seems to use google scholar databases. Attention mac users: it doesn't to work on mac os X without some kind of Windows emulator.