TY  - RPRT
TI  - Negative differential conductivity in shallow-impurity hopping.
AU  - D Emin
AU  - CF Hart
PY  - 1985
DO  - 10.1103/physrevb.32.6503
UR  - https://pubmed.ncbi.nlm.nih.gov/9936754/
ID  - 9936754
ER  -