TY  - RPRT
TI  - One-sided difference schemes and transonic flow.
AU  - B Engquist
AU  - S Osher
PY  - 1980
DO  - 10.1073/pnas.77.6.3071
UR  - https://pubmed.ncbi.nlm.nih.gov/16592824/
ID  - 16592824
ER  -