• 7.5.2 published ._. report
  • 7.5.4 published ._. report
  • 7.5.6 published ._. report
  • 7.5.8 published ._. report
  • 7.5.10 published ._. report
  • 7.5.12 published ._. report ._. alternate solution published
  • 7.6.2 published ._. report
  • 7.6.4 two solutions published ._. report
  • 7.6.6 published ._. report
  • 7.6.8 published ._. report
  • 7.6.10 published ._. report
  • 7.6.12 published ._. report ._. alternate solution under revision
  • 7.6.14 published ._. report
  • 7.6.16 published ._. report

    Last updated Fri 14 May 1999