TY  - RPRT
TI  - Covering dynamical systems: twofold covers.
AU  - C Letellier
AU  - R Gilmore
PY  - 2000
DO  - 10.1103/physreve.63.016206
UR  - https://pubmed.ncbi.nlm.nih.gov/11304334/
ID  - 11304334
ER  -