TY  - GEN
AU  - Mayaud, P.
TI  - Derivation, meaning and use of geomagnetic indices
T2  - Geophysical Monograph
VL  - 22
PY  - 1980///
CY  - Washington
PB  - American Geophysical Union
KW  - GEOMAGNETISMO
KW  - IM
ER  -