?Distribution-free? estimates of efficiency in the U.S. banking industry and tests of the standard distributional assumptions
1993 ◽
Vol 4
(3)
◽
pp. 261-292
◽
2007 ◽
Vol 50
(3)
◽
pp. 687-714
◽
1995 ◽
Vol 1995
(2)
◽
pp. 55
◽
1997 ◽
Vol 21
(5)
◽
pp. 721-740
◽
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