TY  - RPRT
TI  - Identifying coherent structures in nonlinear wave propagation.
AU  - William I. Newman
AU  - David K. Campbell
AU  - James M. Hyman
PY  - 1991
DO  - 10.1063/1.165813
UR  - https://pubmed.ncbi.nlm.nih.gov/12779899/
ID  - 12779899
ER  -