Question: The BFH paper, named after the initials of the authors of the paper, a landmark paper of stellar physics published in "Reviews of Modern Physics" in which year?

<P0-S0> Eleanor Margaret Burbidge ("née" Peachey), FRS (born August 12, 1919 in Davenport) is a British-born American astrophysicist, noted for original research and holding many administrative posts, including Director of the Royal Greenwich Observatory. <SEP> <P1-S0> John Allen "Jack" Eddy (March 25, 1931 – June 10, 2009) was an American astronomer who published professionally under the name John A. Eddy but much of the content referencing him can be found under his nickname Jack which he preferred to use. <P1-S1>  In 1976 Dr. Eddy published a landmark paper in Science titled "The Maunder Minimum" where, using the Nineteenth Century works of Edward W. Maunder and Gustav Spörer, he identified a 70-year period from 1645 to 1715 as a time when solar activity all but stopped. <P1-S2>  In making the case for the anomaly, he gathered and interpreted data from a wide variety of sources, including first-hand accounts from extant historical observations of the Sun going back to the telescopic observations of Galileo and other contemporary scientists of the 17th and early 18th centuries; from historical reports of the aurora borealis observed in past centuries in Europe and the New World; from visual observations of sunspots seen with the unaided eye at sunrise and sunset in dynastic records from the Orient; from existing descriptions of the eclipsed Sun; and from measurements of carbon-14 in dated tree-rings. <P1-S3>  In the last of these, which can be used as a proxy indicator of solar activity, he found evidence of other similar periods of solar quiescence in the distant past, the most recent an even longer 90-year span, from about 1460 until 1550, which he named the Spörer Minimum. <P1-S4>  Both the Maunder and Spörer minima fell during the coldest parts of the Little Ice Age, which suggested a meaningful connection between the longer term behavior of the Sun and of the Earth’s mean surface temperature. <P1-S5>  In advancing the theory that the Sun is a variable star Eddy observed: "It has long been thought that the Sun is a constant star of regular and repeatable behavior. <P1-S6>  Measurements of the radiative output, or solar constant, seem to justify the first assumption, and the record of periodicity in sunspot numbers is taken as evidence of the second. <P1-S7>  Both records, however, sample only the most recent history of the Sun." <SEP> <P2-S0> Neutron capture nucleosynthesis describes two nucleosynthesis pathways: the r-process and the s-process, for "rapid" and "slow" neutron captures, respectively. <P2-S1>  R-process describes neutron capture in a region of high neutron flux, such as during supernova nucleosynthesis after core-collapse, and yields neutron-rich nuclides. <P2-S2>  S-process describes neutron capture that is slow relative to the rate of beta decay, as for stellar nucleosynthesis in some stars, and yields nuclei with stable nuclear shells. <P2-S3>  Each process is responsible for roughly half of the observed abundances of elements heavier than iron. <P2-S4>  The importance of neutron capture to the observed abundance of the chemical elements was first described in 1957 in the BFH paper. <SEP> <P3-S0> The BFH paper, named after the initials of the authors of the paper, Margaret Burbidge, Geoffrey Burbidge, William Fowler, and Fred Hoyle, is a landmark paper of stellar physics published in "Reviews of Modern Physics" in 1957. <P3-S1>  The formal title of the paper is "Synthesis of the Elements in Stars", but the article is generally referred to only as "BFH".