1. Euromonitor International. Passport: Global Market Information Database (2016) http://www.tobaccoatlas.org/topic/cigarette-use-globally. Accesed 15 february 2017.
2. Mackay J, Eriksen M, Shafey O. The Tobacco Atlas 2nd Edition. In: American Cancer Society. 2000:pp 32–33.
3. Isolation and characterization of Pseudomonas sp. strain HF-1, capable of degrading nicotine;Ruan;Res Microbiol,2005
4. Knox A. An overview of incineration and EFW technology as applied to the management of municipal solid waste (MSW). ONEIA Energy Subcommittee. 2005.
5. A practical proposal for solving the world's cigarette butt problem: recycling in fired clay bricks;Mohajerani;Waste Manage,2016