N. R. Nilsson Editor.International conference on ionization phenomena in gases(4th : 1959 : Uppsala)：Proceedings of the 4th International conference on ionization phenomena in gases, Uppsala,1959．v.2.North-Holland,1959.
International conference on ionization phenomena in gases(4th : 1959 : Uppsala)：Proceedings of the 4th International conference on ionization phenomena in gases, Uppsala,1959．v.2
N. R. Nilsson Editor.International conference on ionization phenomena in gases(4th : 1959 : Uppsala)：Proceedings of the 4th International conference on ionization phenomena in gases, Uppsala,1959．v.1.North-Holland,1959.
International conference on ionization phenomena in gases(4th : 1959 : Uppsala)：Proceedings of the 4th International conference on ionization phenomena in gases, Uppsala,1959．v.1
