The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Nature's own page for the article gives citation_online_date 1975/08/01 and shows "01 August 1975" as the publication date, with the paper received 14 May 1975 and accepted 26 June 1975; it is Nature volume 256, issue 5517, pages 495-497.
Defines what the method produces - "an antibody produced from a cell lineage made by cloning a unique white blood cell", all tracing back to a unique parent cell and binding a single epitope - against polyclonal mixtures.[1]
Records the paper - "In 1975 they published 'Continuous cultures of fused cells secreting antibody of predefined specificity' in Nature[1]" - and the 1984 Nobel Prize in Physiology or Medicine shared with César Milstein and Niels Kaj Jerne.
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