Find citation keys using Mendeley

query_cite.rb

#!/usr/bin/ruby
require 'sqlite3'

cite_part = ARGV[0]
db_name = "/Users/nernst/Library/Application\ Support/Mendeley\ Desktop/neil\@neilernst.net\@www.mendeley.com.sqlite"
db = SQLite3::Database.new( db_name )
db.results_as_hash = true
query = "select citationkey, title, year from Documents where citationkey like '%#{cite_part}%'"#MATCH '#{cite_part}'"#{}like '%#{cite_part}%'"
db.execute( query ) do |row|
  print row['citationKey'] + '|'
  #print '@row:' + row['citationKey'] + "|" + row['title'] + "|" + row['year'].to_s
end

show_results.scpt

on run {input, parameters}
	
	set cite to input --"" --"jureta"
	set delimitedList to {}
	-- set test to "Carvalho2005a|Hayes2008|Sampaio2005|Sawyer2002|Searle1976|Baker|Denecker2002|Liu2009|Anbulagan2009"
	set ssresult to do shell script "/Users/nernst/Desktop/query_cite.rb " & cite as string
	set tid to AppleScript's text item delimiters
	set AppleScript's text item delimiters to "|"
	set delimitedList to every text item of ssresult
	set y to choose from list delimitedList
	set AppleScript's text item delimiters to tid
	return y
end run

No, I haven't. I would recommend posting on the Mendeley website and forums about it.