Adelberger, Eric G. (12 April 2011). «Solar fusion cross sections. II. The pp chain and CNO cycles». Reviews of Modern Physics83 (1): 201. doi:10.1103/RevModPhys.83.195. Bibcode: 2011RvMP...83..195A. See Figure 2. The caption is not very clear but it has been confirmed that the percentages refer to how much of each reaction takes place, or equivalently how much helium-4 is produced by each branch.
Aldo Serenelli (Nov 2009). «New Solar Composition: The Problem With Solar Models Revisited». The Astrophysical Journal Letters705 (2): L123–L127. doi:10.1088/0004-637X/705/2/L123. Bibcode: 2009ApJ...705L.123S. Calculated from model AGSS09 in Table 3.
Burbidge, E.; Burbidge, G.; Fowler, William; Hoyle, F. (1 October 1957). «Synthesis of the Elements in Stars». Reviews of Modern Physics29 (4): 547–650. doi:10.1103/RevModPhys.29.547. Bibcode: 1957RvMP...29..547B. This value excludes the 2% neutrino energy loss.
Adelberger, Eric G. (12 April 2011). «Solar fusion cross sections. II. The pp chain and CNO cycles». Reviews of Modern Physics83 (1): 201. doi:10.1103/RevModPhys.83.195. Bibcode: 2011RvMP...83..195A. See Figure 2. The caption is not very clear but it has been confirmed that the percentages refer to how much of each reaction takes place, or equivalently how much helium-4 is produced by each branch.
Aldo Serenelli (Nov 2009). «New Solar Composition: The Problem With Solar Models Revisited». The Astrophysical Journal Letters705 (2): L123–L127. doi:10.1088/0004-637X/705/2/L123. Bibcode: 2009ApJ...705L.123S. Calculated from model AGSS09 in Table 3.
Burbidge, E.; Burbidge, G.; Fowler, William; Hoyle, F. (1 October 1957). «Synthesis of the Elements in Stars». Reviews of Modern Physics29 (4): 547–650. doi:10.1103/RevModPhys.29.547. Bibcode: 1957RvMP...29..547B. This value excludes the 2% neutrino energy loss.