Intermodal competition and a slowdown in the productivity growth of US local exchange carriers
2012 ◽
Vol 22
(2)
◽
pp. 489-510
◽
2005 ◽
Vol 6
(1)
◽
pp. 76
2001 ◽
Vol 25
(5)
◽
pp. 335-345
◽
1998 ◽
Vol 17
(1)
◽
pp. 74-93
◽
1998 ◽
Vol 10
(2)
◽
pp. 219-235
◽