nFields may not be segmented,
nWord overlap could be misleading
  
   Duplicates with little overlap even in title
§Johnson Laird, Philip N. (1983). Mental models. Cambridge, Mass.: Harvard University Press.
§P. N. Johnson-Laird. Mental Models: Towards a Cognitive Science of Language, Inference, and Consciousness. Cambridge University Press, 1983
n
   Non-duplicates with lots of word overlap
§H. Balakrishnan, S. Seshan, and R. H. Katz., Improving Reliable Transport and Hando Performance in Cellular Wireless Networks, ACM Wireless Networks, 1(4), December 1995.
§H. Balakrishnan, S. Seshan, E. Amir, R. H. Katz, "Improving TCP/IP Performance over Wireless Networks," Proc. 1st ACM Conf. on Mobile Computing and Networking, November 1995.