1. Smokeless tobacco and tobacco-specific nitrosamines;International Agency for Research on Cancer,2007
2. New and traditional smokeless tobacco: comparison of toxicant and carcinogen levels;Stepanov;Nicotine Tob Res,2008
3. Surveillance of moist snuff total nicotine, pH, moisture, un-ionized nicotine, and tobacco-specific nitrosamine content;Richter;Nicotine Tob Res,2008
4. Global surveillance of oral tobacco products: total nicotine, unionised nicotine and tobacco-specific N-nitrosamines;Stanfill;Tob Control,2011
5. Levels of (S)-N'-nitrosonornicotine in U.S. tobacco products;Stepanov;Nicotine Tob Res,2013