Reference Label	Details
Prosen 1954	E. J. Prosen, private communication of unpublished NBS results, quoted in McCullough 1954 and by Cass 1958 Note: As opposed to McCullough 1954, Cass 1958 does not explicitly name the source of the private communication
Cass 1958	R. C. Cass, S. E. Fletcher, C. T. Mortimer, P. G. Quincey, H. D. Springall, J. Chem. Soc. 958-963 (1958) Heats of Combustion and Molecular Structure. Part IV. Aliphatic Nitroalkanes and Nitric Esters