1. The breakdown described above will be called a regular A -frilling;
2. See § 26K.
3. Cf. CHOUnxuxi et al. [Z].
4. R. Holm presented a provisory calculation in the Proc. Internat. Symposium on Electric Contacts Nov. 1961, Univ. of Maine; see also E. Rolm [15] and E. Holm [14].
5. HOLM [29] Fig. (23.01).