Apart from any fair dealing for the purposes ofresearch or private
study, or criticism o. review,
as permitted under the Copyright, Designs and patents Act 1988, this publication ay only be
reproduc€d, stored or transmitted, in any form or by any means, with the prior permission in
writing ofthe publish€rs, or in the case of reprographic reproducrion in accord;nce wirh the
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ISBN l-8523J,693,5 Springer-VerlagLondon B€rlin Heidelberg
a member of BertelsmannSpringeSr cience+BusinesM
as permitted under the Copyright, Designs and patents Act 1988, this publication ay only be
reproduc€d, stored or transmitted, in any form or by any means, with the prior permission in
writing ofthe publish€rs, or in the case of reprographic reproducrion in accord;nce wirh the
termsoflicences issu€d bythe Copyright Licensing ASency. Enquiries con€eing reproducrion
outside those t€rms should be sent to the pubtishers.
ISBN l-8523J,693,5 Springer-VerlagLondon B€rlin Heidelberg
a member of BertelsmannSpringeSr cience+BusinesM