TY  - RPRT
TI  - Dual extraction of R-mode and Q-mode factor solutions
AU  - D. Zhou
AU  - T. Chang
AU  - J.C. Davis
PY  - 1983
DO  - 10.1007/bf01093413
UR  - https://pubs.usgs.gov/publication/70011369
ID  - 70011369
ER  -