• 6.2.2 published ._. report ._. alternate solution published
  • 6.2.4 under revision ._. report
  • 6.2.6 under revision ._. report
  • 6.2.8 published ._. report
  • 6.2.10 published ._. report
  • 6.2.12 no solutions received
  • 6.2.14 published ._. report
  • 6.2.16 published ._. report
  • 6.2.18 published ._. report
  • 6.3.2 published ._. report
  • 6.3.4 published ._. report
  • 6.3.6 published ._. report
  • 6.4.2 published ._. report
  • 6.4.4 published ._. report
  • 6.4.6 published ._. report
  • 6.4.8 published ._. report ._. alternate solution under revision
  • 6.4.10 published ._. report

    Last updated Fri 14 May 99