Reference Label	Details
Prosen 1951	E. J. Prosen, F. W. Maron, and F. D. Rossini, J. Res. Natl. Bur. Stand. 46, 106-112 (1951) Heats of Combustion, Formation, and Isomerization of Ten C4 Hydrocarbons
as quoted by Cox 1970	as quoted by Cox 1970