Beyond low-level activity: On a ``non-radioactive'' gas mantle Poljanc, K. ; Steinhauser, G. ; Sterba, J. ; Buchtela, K. ; Bichler, M. Abstract Publication: Science of the Total Environment Pub Date: March 2007 DOI: 10.1016/j.scitotenv.2006.11.024 Bibcode: 2007ScTEn.374...36P