1. Bencko V. Ambient air pollution in Czechoslovakia. In: Air Pollution in Central and Eastern Europe: Health and Public Policy (Levy BS ed). Boston MA:Management Sciences for Health 1991;10-18.
2. Czech Republic. Collection of Laws: Zakon o ovzdui No. 309/1991. Prague Czech Republic 9 July 1991.
3. U.S. Environmental Protection Agency. Code of Federal Regulations Subchapter C-Air Programs Part 50 National Primary and Secondary Ambient Air Quality Standards. 40CFR§50.4 1 July 1995.
4. Czechoslovakia: examining a critically ill environment
5. Teplice Program-the impact of air pollution on human health;rám RJ;Environ Health Perspect,1996