TY  - RPRT
TI  - Integrability, normal forms, and magnetic axis coordinates
AU  - Burby, Joshua William
AU  - Duignan, Nathan
AU  - Meiss, James D.
PY  - 2021
DO  - 10.1063/5.0049361
UR  - https://www.osti.gov/biblio/1874179
ID  - 1874179
ER  -