TY  - RPRT
TI  - Embedding trees in the rationals.
AU  - J Baumgartner
AU  - J Malitz
AU  - W Reinhardt
PY  - 1970
DO  - 10.1073/pnas.67.4.1748
UR  - https://pubmed.ncbi.nlm.nih.gov/16591891/
ID  - 16591891
ER  -