3[3]Lyons -Hart,J.,K.Shafer,and M.Parrish:Puff-by puff and intrapuff analysis of cigarette smoke using infrared spectroscopy; Vib.Spec.27 (2001)29-42.
4[4]Harward,C.and M.Parrishi:Measurement of formaldehyde in a single puff of cigarette smoke using tunable diode laser infrared spectroscopy; Appl.Spec.54(2000) 1665-1677.
5[5]Koller,K.and C.Thomas; Puff-by-puff mainstream analysis by multiplex gas chromatography spectrometry; Beitr.Tabakforch.Int.19(2001)345-351.
6[6]K.A.Wagner,R.Higby,and K.Stutt; Puff-by-puff analysis of selected mainstream smoke constituents in the Kentucky Reference 2R4F cigarette; Beitr.Tabakforch.Int.21(2005) 273-279.