Intermodal competition and a slowdown in the productivity growth of US local exchange carriers

2012 ◽  
Vol 22 (2) ◽  
pp. 489-510 ◽  
Author(s):  
N. Sung
2014 ◽  
Vol 31 (1) ◽  
pp. 78-83
Author(s):  
Victor Glass ◽  
Joseph Prinzivalli ◽  
Stela Stefanova

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