[1. Kozłowski, L.T., R.C. Frecker, V. Khouw, and M.A. Pope: The misuse of Mless-hazardousN cigarettes and its detection: hole-blocking of ventilated filters; Am. J. Pub. Health 70 (1980) 1202-03.]Search in Google Scholar
[2. Kozłowski, L.T., W.S. Rickert, M.A. Pope, J.C. Robinson, and R.C. Frecker: Estimating the yield to smokers of tar, nicotine, and carbon monoxide from the Mlowest yieldN ventilated filter-cigarettes; Br. J. Addict. 77 (1982) 159-165.]Search in Google Scholar
[3. Kozłowski, L.T., M.A. Pope, and J.E. Lux: Preva-lence of the misuse of ultra-low-tar cigarettes by blocking filter vents; Am. J. Pub. Health 78 (1988) 694-695.]Search in Google Scholar
[4. Kozłowski, L.T., J.L. Pillitteri, and C.T. Sweeney: Misuse of PlightQ cigarettes by means of vent blocking; J. Subst. Abuse 6 (1994) 333-36.]Search in Google Scholar
[5. McBride, C: Imperial Tobacco, Canada, unpublished results, 1984.]Search in Google Scholar
[6. Baker, R.R. and L.S. Lewis: Filter ventilation - has there been a “cover-up”? Recent Adv. Tob. Sci. 23 (1997) 152-196.]Search in Google Scholar
[7. Porter, A.: Review of Tipping used on the Canadian Market, Imperial Tobacco, Canada (unpublished), 1998.]Search in Google Scholar