• 4.1.2 published ._. report
  • 4.1.4 published ._. report ._. alternate solution under revision
  • 4.1.6 published ._. report
  • 4.1.8 two solutions published ._. report
  • 4.1.10 published ._. report
  • 4.1.12 published ._. report

    Last updated Mon 11 Jan 99