1. Automatic beta gauge instrument for atmospheric dust monitoring;Allegrini,1982
2. Simultaneous nitric acid, particulate nitrate and acidity measurements in ambient air;Appel;Atmospheric Environment,1980
3. Possible changes in aerosol composition due to the departure from equilibrium conditions during sampling;Brosset,1979
4. Method for determination of atmospheric ammonia;Ferm;Atmospheric Environment,1979
5. Method for determination of gaseous nitric acid and particulate nitrate in the atmosphere;Ferm,1982