1. 3) K. B. Kim, B. M. Lee : Cancer Lett., 113, 205 (1997).
2. 4) IARC : "Tobacco Smoke and Involuntary Smoking, Monographs on the Evaluation of Carcinogenic Risks to Humans 83", p. 1 (2004), (Lyon, France).
3. 5) USEPA : "Priority Pollutants 40 CFR, Protection of Environment Appendix A to Part 423", (2010), (Washington, DC, USA).