1. K.W. Böer, J. Appl. Phys. 50, 5356 (1979a)
2. K.W. Böer, Introduction Into Space Charge Effects in Semiconductors (Springer, Berlin, 2008)
3. K.W. Böer, Phys. Status Solidi A 206, 2665 (2009a)
4. K.W. Böer, Electro-Optical Effects to Visualize Field and Current Instabilities in Semiconductors (Springer, Berlin, 2009b)
5. K.W. Böer, J. Appl. Phys. 107, 23701 (2010)