Keiko Kawabe Akihiko Matsuo Sanya Uehara Akira Ogawa Variable Classification Technique and Application to the Year 2000 Problem. 44-51 1998 conf/csmr/1998 CSMR http://csdl.computer.org/comp/proceedings/csmr/1998/8421/00/84210044abs.htm db/conf/csmr/csmr1998.html#KawabeMUO98