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Astron. Astrophys. 327, 930-946 (1997)
Acknowledgements
We thank A. Bosma and the referee, A. Romeo, for their helpful
comments. We also wish to thank Lars Hernquist for kindly providing us
with the vectorised version of the treecode, and the "Institut de
développement et des resources en informatique scientifique,
Orsay, France (I.D.R.I.S.)" for the allocation of computer time. Part
of this work was supported by the Dirección General de
Investigación y
Tecnolog
a under contract
PB 93-0824-C02-02.
© European Southern Observatory (ESO) 1997
Online publication: April 6, 1998
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