tools.crossref: invalidate only with null definitions-changed
tools.crossref: invalidate only with null definitions-changed

factor/factor,mrjbq7/factor,factor/factor,mrjbq7/factor,tgunr/factor,tgunr/factor,tgunr/factor,factor/factor,tgunr/factor,factor/factor,mrjbq7/factor,factor/factor,tgunr/factor,tgunr/factor,mrjbq7/factor,mrjbq7/factor,mrjbq7/factor,factor/factor