1. Directive 2014/40/EU of The European Parliament And Of The Council of 3 April 2014 on the approximation of the laws, regulations and administrative provisions of the Member States concerning the manufacture, presentation and sale of tobacco and related products and repealing Directive 2001/37/EC.
2. Electronic cigarette: a recent update of its toxic effects on humans;Huang;J. Cell. Physiol.,2018
3. ISO 16035:2003. Animal and vegetable fats and oils – determination of low-boiling halogenated hydrocarbons in edible oils.
4. ISO 10301:1997 Water quality – determination of highly volatile halogenated hydrocarbons – gas-chromatographic methods.
5. DIN 38407 Teil 9: 1991: Bestimmung von Benzol und einigen Derivaten mittels Gaschromatographie.