[Xy-pic] Curved path

[Anandam Banerjee]

Is there any way to join two points in a commutative diagram by a curved
path?
  Actually i want to replace the curved arrow from K to L in the following
segment by a path.
\xymatrix{
B \ar@{^{(}->}[r] \ar@{-}[d] & L \ar@{-}[d] \\
 A \ar@{^{(}->}[r] & K \ar@/_1pc/[u]_{\mbox{finite}} }

Please help.
Thank you.
Anandam.

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ANANDAM BANERJEE
CHENNAI MATHEMATICAL INSTITUTE
92,G.N.CHETTY ROAD
T.NAGAR,CHENNAI-600017
E-mail: anandam at cmi.ac.in

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