Hoon Hong John Perry Corrigendum to "Are Buchberger's criteria necessary for the chain condition?" [J. Symbolic Comput. 42(2007) 717-732]. 233 2008 43 J. Symb. Comput. http://dx.doi.org/10.1016/j.jsc.2007.10.002 3 db/journals/jsc/jsc43.html#HongP08