citetag handles repeat citations of the same reference
citetag handles repeat citations of the same reference

alexanian/uwaterloo-igem-2015,alexanian/uwaterloo-igem-2015,mattsmart/uwaterloo-igem-2015,rjgoodin/uwaterloo-igem-2015,igem-waterloo/uwaterloo-igem-2015,rjgoodin/uwaterloo-igem-2015,igem-waterloo/uwaterloo-igem-2015,igem-waterloo/uwaterloo-igem-2015,rjgoodin/uwaterloo-igem-2015,igem-waterloo/uwaterloo-igem-2015,mattsmart/uwaterloo-igem-2015,igem-waterloo/uwaterloo-igem-2015,alexanian/uwaterloo-igem-2015,igem-waterloo/uwaterloo-igem-2015,mattsmart/uwaterloo-igem-2015,rjgoodin/uwaterloo-igem-2015,alexanian/uwaterloo-igem-2015,alexanian/uwaterloo-igem-2015,igem-waterloo/uwaterloo-igem-2015,rjgoodin/uwaterloo-igem-2015,mattsmart/uwaterloo-igem-2015,alexanian/uwaterloo-igem-2015,mattsmart/uwaterloo-igem-2015,mattsmart/uwaterloo-igem-2015,alexanian/uwaterloo-igem-2015,alexanian/uwaterloo-igem-2015,rjgoodin/uwaterloo-igem-2015,rjgoodin/uwaterloo-igem-2015,igem-waterloo/uwaterloo-igem-2015,mattsmart/uwaterloo-igem-2015,rjgoodin/uwaterloo-igem-2015,mattsmart/uwaterloo-igem-2015