1. R. C. Weast (ed.), “The Handbook of Chemistry and Physics,” 54th Ed., CRC Press, Cleveland, Ohio, 1973, p. C-107.
2. J. H. Wotiz, “Chemistry of Acetylene,” ed by H. G. Viehe, Marcel Dekker, New York, 1969, p. 385.
3. J. H. Wotiz, “Chemistry of Acetylenes,” ed. by H. G. Viehe, Marcel Dekker, New York, 1969, p. 393.