TY  - RPRT
TI  - Interplays between Harper and Mathieu equations.
AU  - E Papp
AU  - C Micu
PY  - 2001
DO  - 10.1103/physreve.64.056203
UR  - https://pubmed.ncbi.nlm.nih.gov/11736050/
ID  - 11736050
ER  -