References

• The 2003 Perl Advent Calendar (Attribute::Handlers) http://perladvent.pm.org/2003/7th/
• Redispatching Method Calls with NEXT http://use.perl.org/articles/01/12/05/1654222.shtml
• Overloading http://www.perl.com/pub/a/2003/07/22/overloading.html
• Number::Fraction http://search.cpan.org/~davecross/Number-Fraction-1.09/lib/Number/Fraction.pm