1. The Bohm criterion and sheath formation
2. D. Bohm , in The Characteristics of Electrical Discharges in Magnetic Fields, edited by
A. Guthrie and
R. K. Wakerling (
McGraw-Hill,
New York, 1949), Chap. 3, pp. 77–86.
3. The influence of collisions on the plasma sheath transition
4. The plasma–sheath matching problem