comment out citeceerx url that keeps disappearing.
comment out citeceerx url that keeps disappearing.

Impactstory/citeas-api,Impactstory/citeas-api,Impactstory/oadoi,Impactstory/oadoi,Impactstory/citeas-api,Impactstory/sherlockoa,Impactstory/sherlockoa,Impactstory/oadoi