TY  - RPRT
TI  - Oscillatory singular integrals and harmonic analysis on nilpotent groups.
AU  - F Ricci
AU  - E M Stein
PY  - 1986
DO  - 10.1073/pnas.83.1.1
UR  - https://pubmed.ncbi.nlm.nih.gov/16593640/
ID  - 16593640
ER  -