I wrote in paper journals back then — small notebooks that I had at home. (dishbydish.net)
But if you want to know which two papers the journal editors missed, you'll have to read on. (sciencenews.org)
Crosschecking those with papers the journals had investigated and labeled as duplicates, they found 175 papers that had been published at least twice — some as a result of error on the journal's part, and some through a fault of the author. (sciencemag.org)