TY  - RPRT
TI  - Operator ordering in effective-mass theory.
AU  - J Thomsen
AU  - GT Einevoll
AU  - PC Hemmer
PY  - 1989
DO  - 10.1103/physrevb.39.12783
UR  - https://pubmed.ncbi.nlm.nih.gov/9948150/
ID  - 9948150
ER  -