• 1.1.3 published ._. report
  • 1.1.9 published ._. report
  • 1.1.11 published ._. report
  • 1.2.3 published ._.report._. alternate solution
  • 1.2.5 under revision ._. report
  • 1.2.6 published
  • 1.2.7 published ._. report
  • 1.2.8 published
  • 1.2.9 published ._. report
  • 1.2.15 two solutions published ._. report
  • 1.2.17 published ._. report
  • 1.4.1 published ._.report
  • 1.4.3 published ._. report

    Last updated Sat 7 Dec 1996