1. European Commission. Green paper: towards a european strategy for the security of energy supply. COM; 2000:769 final.
2. Carbon dioxide emissions from the global cement industry;Worrell;Annu Rev Energy Environ,2001
3. European Commission. Integrated Pollution Prevention and Control (IPPC) reference document on best available techniques in the cement and lime manufacturing industries; 2001.
4. Cement manufacturing using alternative fuels and the advantages of process modelling;Kääntee;Fuel Process Technol,2004
5. NIOSH. What you need to know about occupational exposure to metalworking fluids. US Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health. DHHS (NIOSH) Publication No. 98–116; 1998.