• 4.5.2 published ._. report
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  • 4.5.6 under revision ._. report
  • 4.5.8 published ._. report ._. alternate solution published
  • 4.5.10 published ._. report ._. alternate solution published
  • 4.5.12 published ._. report
  • 4.5.14 no adequate paper received ._. report
  • 5.1.2 under revision ._. report
  • 5.1.4 published ._. report
  • 5.1.6 published ._. report
  • 5.1.8 published ._. report ._. two alternate solutions published
  • 5.1.10 published ._. report
  • 5.1.12 published ._. report
  • 5.1.14 published ._. report
  • 5.1.16 published ._. report
  • 5.1.18 joint solution under revision ._. report ._. joint solution under revision
  • 5.1.20 under revision ._. report ._. alternate solution published
  • 5.1.22 published ._. report

    Last updated Fri 14 May 99