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.
The paper's own front matter gives a two-month issue and no day: "The Journal of Political Economy, Vol. 81, No. 3 (May - Jun., 1973), pp. 637-654". With only an issue window, the pin takes its last day rather than its first.
Describes what the paper produced - a formula giving "a theoretical estimate of the price of European-style options" showing the option has a unique price given the risk of the security - and records the 1997 Nobel Memorial Prize to Merton and Scholes for the risk-neutral dynamic revision.[1]
The exchange that opened in 1973, the same year, and gave the formula a market to be used in; context for why this paper changed an industry rather than only a literature.[1]
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most.