TY  - RPRT
TI  - Relativized problems with abelian phase group in topological dynamics.
AU  - D McMahon
PY  - 1976
DO  - 10.1073/pnas.73.4.1007
UR  - https://pubmed.ncbi.nlm.nih.gov/16592304/
ID  - 16592304
ER  -