TY  - RPRT
TI  - Theory for errors, resolution, and separation of unknown variables in inverse problems, with application to the mantle and the crust in Southern Africa and Scandinavia.
AU  - Der, Z. A.
AU  - Landisman, M.
PY  - 1972
UR  - https://ntrs.nasa.gov/citations/19730043819
ID  - 19730043819
ER  -