1. Effects of air ionization on the performance of a vigilence test;Halcomb, C.G.; Kirk, R.E.;Journal of Engineering Psychology,1965
2. Air ions and human performance;Hawkins, C.H.; Barker, T.;Ergonomics,1978
3. Influence of small atmospheric ions on the airways in patients with bronchial asthma;Osterballe 0, Weeke B, Albrechsten 0;Allergy,1979
4. Effect of long term ionised air treatment on patients with bronchial asthma;Jones, D.P.; O'Connor, S.A.; Collins, J.V.; Watson, B.W.;Thorax,1976
5. Memoires d'Acadamie Royal de Science;Nollet, Abbe,1752