1. Ecological Encyclopedic Dictionary,2000
2. Davydova, S.L. and Sitnikova, G. The problem of lead contamination, Neftekhimiya, v.36, N3, p.281, 1996; Determination of Metals in Petroleum and Products, Industrial Labor, 1995, N1, p.5 and 1997, N10, p.2.
3. HMs as Supertoxicants of XXI;Davydova,2001
4. Petroleum and Products in Environment;Davydova,2003
5. Elements in food analysis and classification;Caroli,2000