A fact from J. Carson Mark appeared on Wikipedia's Main Page in the Did you know column on 7 October 2014 ( check views). The text of the entry was as follows: Did you know... that J. Carson Mark wrote a paper dispelling the myth that reactor-grade plutonium could not be used for nuclear weapons? A record of the entry may be seen at Wikipedia:Recent additions/2014/October. The nomination discussion and review may be seen at Template:Did you know nominations/J. Carson Mark.

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In one of the citations there's a bibcode error (easy to see if you ctrl+f it). I investigated and discovered that we're using an archived version of a source that can easily be accessed via the DOI: https://doi.org/10.1063%2F1.881942 In my opinion, this source should be updated by removing the current archive URL, replacing it, marking the link as not dead, and replacing the link with the new one that the DOI redirects to. Also: where is the bibcode listed? I don't see it. I'll leave this comment here and check back to see if any action has been taken. If no one opposes, I'll fix it myself (removing the bibcode field entirely). Sincerely, Shashi Sushila Murray, ( message me) 10:26, 9 November 2018 (UTC) reply